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7551519 Passive long range acoustic sensor  
This Passive Long Range Acoustical Sensor relates to means of sensing acoustical sources and signals, including multi-channel acoustical signals, such as various types of sounds, vibrations,... 		1000
US20080151694 Passive long range acoustic sensor  
This Passive Long Range Acoustical Sensor relates to means of sensing acoustical sources and signals, including multi-channel acoustical signals, such as various types of sounds, vibrations,... 		987
3757285 ACOUSTIC RANGE MEASURING DEVICE  
An acoustic range measuring device, utilizing an electronic counter to determine the number of pulses from a reference oscillator that occur in the time interval between the transmitting and... 		800
10371845 Acoustic ranging apparatus and methods  
A ranging system comprises a plurality of streamers, each with a plurality of receivers. A plurality of transmitters is also disposed along one or more of the streamers, each configured to... 		742
US20170102474 ACOUSTIC RANGING APPARATUS AND METHODS  
A ranging system comprises a plurality of streamers, each with a plurality of receivers. A plurality of transmitters is also disposed along one or more of the streamers, each configured to... 		729
9013959 Long-range acoustical positioning system on continental shelf regions  
Methods and systems for determining a geophysical position of an object in an underwater channel are provided. Acoustic signals from at least two sources are received by a receiver of the object.... 		699
9113270 Transpositional acoustic frequency range in EAS patients  
An electric acoustic stimulation (EAS) hearing system includes a signal processor for processing an acoustic signal input to generate: i. an electrical communications signal representative of an... 		695
US20130116746 Transpositional Acoustic Frequency Range In EAS Patients  
An electric acoustic stimulation (EAS) hearing system includes a signal processor for processing an acoustic signal input to generate: i. an electrical communications signal representative of an... 		695
4975889 Acoustic ranging apparatus and method  
An acoustic ranging apparatus directs a burst of acoustic energy toward an acoustically reflective target object. The time it takes for an echo to return to the ranging apparatus is measured to... 		694
4890266 Acoustic range finding system  
In acoustic level sensing apparatus, in which pulses of acoustic energy are transmitted by an electrically energized transducer towards a surface to be sensed, and the electrical output from the... 		687
5079751 Acoustic ranging systems  
In an acoustic pulse-echo ranging system, the transmitter and receiver, which respectively generate pulses of acoustic energy and receive reflections of the same, are electronically tuned to... 		686
4992998 Acoustic range finding system  
In acoustic level sensing apparatus, in which pulses of acoustic energy are transmitted by an electrically energized transducer towards a surface to be sensed, and the electrical output from the... 		676
US20170111733 Acoustic Device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		664
US20140226849 LONG-THROW ACOUSTIC TRANSDUCER  
An acoustic transducer includes a housing, which may be a circular cylinder or may have a rectangular cross-section. Two permanent magnets that closely fit the inside of the housing are joined by... 		663
10225647 Acoustic device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		662
9332351 Long-throw acoustic transducer  
An acoustic transducer includes a housing, which may be a circular cylinder or may have a rectangular cross-section. Two permanent magnets that closely fit the inside of the housing are joined by... 		661
10244311 Acoustic device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		659
US20170311074 Acoustic Device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		658
10144138 Long-range sonar  
A long-range sonar assembly for detecting objects approximately 2.5-9.5 meters from a robotic device. The assembly includes a printed circuit board including a local controller operably connected... 		654
US20160255431 Acoustic Device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		648
10390129 Acoustic device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		645
US20160337747 Acoustic Device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		645
2418136 Acoustic range finder  
This invention relates to acoustic range finders of the type in which a sound source, such as an enemy gun, is located with respect to the ends of a base line by means of bearings determined from... 		645
4445389 Long wavelength acoustic flowmeter  
A nonintrusive instrument for measuring the volume flowrate of, and the speed of sound in, an arbitrary fluid in a pipe, tube or duct. The sound speed measured is that of a stationary fluid even... 		644
9877103 Acoustic device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		641
9654867 Acoustic device  
An acoustic device having a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes housing that defines an acoustic volume, a first acoustic driver located... 		637
US20180103314 Acoustic Device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		635
9736574 Acoustic device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		634
4596144 Acoustic ranging system  
In an acoustic ranging system, an echo signal received following a shot is repeatedly sampled and the samples digitized to produce a statistical data base representing the received echo profile... 		630
9571917 Acoustic device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		629
10233742 Downhole acoustic ranging utilizing gradiometric data  
An acoustic ranging system utilizes gradiometric data to determine the distance between a first and second well without any knowledge or involvement of the borehole or formation characteristics.... 		627
US20160021449 Acoustic Device  
An acoustic device that has a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes a housing with a first acoustic waveguide having a first sound outlet... 		625
6434429 Implant with close and long-range telemetry  
An electromedical implant (1), in particular a cardiac pacemaker, having a close-range telemetry device for data exchange with an external apparatus (2), which includes at least a close-range... 		617
US20160021446 Acoustic Device  
An acoustic device having a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes housing that defines an acoustic volume, a first acoustic driver located... 		617
US20160201450 DOWNHOLE ACOUSTIC RANGING UTILIZING GRADIOMETRIC DATA  
An acoustic ranging system utilizes gradiometric data to determine the distance between a first and second well without any knowledge or involvement of the borehole or formation characteristics.... 		614
6442282 Acoustic devices  
Acoustic devices have members extending transversely of thickness and capable of sustaining bending waves causing consequential acoustic action by reason of areal distribution of resonant modes of... 		608
10231052 Acoustic device  
An acoustic device that is adapted to be worn on the body of a user, with a first acoustic transducer and a second acoustic transducer, where the first transducer is closer to the expected... 		607
US20010053230 Acoustic devices  
Acoustic devices have members extending transversely of thickness and capable of sustaining bending waves causing consequential acoustic action by reason of areal distribution of resonant modes of... 		604
US20180048960 Acoustic Device  
An acoustic device that is adapted to be worn on the body of a user, with a first acoustic transducer and a second acoustic transducer, where the first transducer is closer to the expected... 		602
9838787 Acoustic device  
An acoustic device that is adapted to be worn on the body of a user, with a first acoustic transducer and a second acoustic transducer, where the first transducer is closer to the expected... 		600
US20170353796 ACOUSTIC DEVICE  
An acoustic device that is adapted to be worn on the body of a user, with a first acoustic transducer and a second acoustic transducer, where the first transducer is closer to the expected... 		600
7483545 Acoustic diaphragm  
An acoustic diaphragm is disclosed having a plurality of acoustic elements supported by the diaphragm. In a preferred form, each element is coupled to a driver and extends radially at a uniform... 		598
8270251 Acoustic isolator  
An acoustic isolator for use with tubular assemblies such as drillpipe or production tubing comprising an acoustic wave transmitter, the acoustic isolator comprising, in series connection, an odd... 		595
US20070153629 Acoustic isolator  
An acoustic isolator for use with tubular assemblies such as drillpipe or production tubing comprising an acoustic wave transmitter, the acoustic isolator comprising, in series, an odd integer λ/4... 		594
10352210 Acoustic device  
Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral... 		593
7362655 Time-synchronous acoustic signal ranging system and method  
This is an underwater acoustic ranging system for determining a range to a target object. An acoustic receiver is provided for detecting acoustic energy and determining an angle of arrival of said... 		592
US20090126464 Acoustic Detector  
An acoustic detector is described for detecting acoustic waves in a medium that can be a relatively dense medium. The detector comprises a concentrating structure provided with a lens-shaped... 		592
US20130301866 Acoustic Device  
The invention relates to an acoustic device and a method of making the same. The acoustic device comprises a diaphragm having an area and having an operating frequency range comprising a part in... 		592
3644881 RECORDER FOR ACOUSTIC RANGING SYSTEM  
A sound ranging system in which coincident sound and radio pulses are emitted from a transmitting station. A receiving station is provided with a recorder having a stylus arm released for movement... 		591
4223311 Long range listening system  
1. A system for locating the position of an energy radiating source comprng three radiated energy receiving means arranged in predetermined substantially linear spaced positions and each producing... 		590

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