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7369902 |
Slave units and network system as well as slave unit processing method and device information collecting method
A network system is constructed by connecting a safety PLC constituting a master unit and safety slaves 2 to each other through a safety network 3 . The safety slaves each have a device...
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6469655 |
Surveillance system for terrestrial navigational and airport landing systems
The invention deals with a surveillance system for terrestrial navigational and landing systems, in which the navigational signals being transmitted for aeroplanes or other airborne objects by the...
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6414632 |
Monitoring of the phase angle of course and clearance signals in an instrument landing system
A method for monitoring a localizer course facility in an instrument landing system, including modulating a course signal at a first signal frequency and at a second signal frequency, and...
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6097338 |
Instrument landing system glide path transmitter device
A glide path transmitter for an instrument landing system. The transmitter includes several antenna radiators by way of which high frequency signals containing various low frequency modulated...
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5969664 |
Method for characterizing air traffic control radar beacon system antenna patterns
A method for measuring and characterizing the Air Traffic Control Radar Beacon System without interrupting service which comprises a computer-controller system which captures the beacon radar...
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5448789 |
Bottom structure of a bed
The present invention provides a bottom structure for a bed having a lifting mechanism and plural parallel bottom strips connected sequentially by elastic strips, thus allowing the bottom to be...
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5388290 |
Bottom structure of a bed
The present invention provides a bottom structure for a bed having a bottom lifting mechanism, comprising plural parallel bottom strips; each of the bottom strips being sequentially connected to...
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5377373 |
Bottom structure of a bed
The present invention provides a bottom structure for a bed having a bottom lifting mechanism, comprising bendable and extensible flexible hollow bottom members, provided in the bottom structure...
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5377369 |
Bottom structure of a bed
The present invention provides a bottom structure for a bed having a bottom lifting mechanism, comprising parallel bottom strips, each strip having coupling grooves, located in the opposing faces...
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5369826 |
Bottom structure of a bed
A bottom structure of a bed having a bottom formed so as to be bendable by a series of parallel strips mutually sequentially connected such that the strips are shorter in width on the side away...
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5254998 |
Executive monitor for microwave landing system
A method and means for monitoring a Microwave Landing System (MLS) that provides statistical independence of the monitoring process from the MLS to insure the integrity of the MLS signal format....
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5229776 |
Method for field monitoring of a phased array microwave landing system far field antenna pattern employing a near field correction technique
A method for obtaining the far field pattern of a phased array MLS antenna using measurements by a monitor located in the near field of the MLS antenna. The near field pattern differs from the far...
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