Matches 351 - 400 out of 530 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
3432668 PHOTOMULTIPLIER HAVING WALL COATING OF ELECTRON EMITTING MATERIAL AND PHOTOCONDUCTIVE MATERIAL  
3432670 RADIATION SCANNER EMPLOYING CONSTANT CURRENT MEANS  
3432669 NOISE CANCELLATION CIRCUIT FOR A PHOTOMULTIPLIER TUBE  
3431420 CROSSFIELD PHOTOELECTRON MULTIPLIER TUBE HAVING CHANNELED SECONDARY EMISSIVE DYNODES  
3424909 STRAIGHT PARALLEL CHANNEL ELECTRON MULTIPLIERS  
3413479 Radiation detector and amplifier having an input axial slot  
3413467 Atmospheric nitrogen fluorescence detection apparatus  
3409778 Photomultiplier tube with a low energy electron inhibitor electrode  
3399304 Apparatus for eliminating interelectrode leakage in a photomultiplier type exposure control system by providing a compensating voltage  
3393319 Photoelectric circuit for counting light pulses above a minimium value  
3391295 Electron system for convergence of electrons from photocathode having curvature in asingle plane  
3390272 Photomultiplier  
3387533 Apparatus for optical copying of photographic negatives  
3387137 Multi-passage electron multiplier with potential differences between passageways  
3374357 Sensitivity regulator for a photomultiplier tube using magnetic modulator means  
3358145 Radiation detector readout system  
3354773 Automatic optical pyrometer system with automatic gain control  
3351764 Circuit for balancing out noise current in a photodiode using a d-c zero average waveform  
3349273 Photoelectric transducer head  
3341730 Electron multiplier with multiplying path wall means having a reduced reducible metal compound constituent  
3340481 Apparatus for modulating the output of photomultiplier tubes  
3337737 Multiplier phototube with calibrating electron beam  
3321660 Electron multiplier having resistive secondary emissive surface which is adapted to sustain a potential gradient, whereby successive multiplication is possible  
3321629 Dynode control circuit for a photomultiplier tube using cascaded transistors  
3320425 Photomultiplier tube circuit with substantially linear output  
3320423 Stellar directional acquisition system using photomultiplier tube  
3315075 Infrared detector testing system comprising scanning the detector surface with a point-source of radiation  
3310678 Method of producing electron multiplication utilizing an amplification cycle  
3302029 Photomultiplier responsive to high frequency modulated light waves  
3299306 Phototube having a photocathode adapted to absorb substantially all the light energyreceived  
3296445 Measuring arrangement using photomultiplier tube with dark current correction  
3296538 Photomultiplier amplifier and power supply  
3294975 Photo-device with segmented photocathode  
3278751 Parallel plate electron multiplier having an inclined electric field and operative without a magnetic field  
3275833 Constant current system for photo-electric multiplier tube  
3272984 Electron multiplier for measuring the flow of positively charged particles  
3271699 Balanced modulator having the anode of a multiplier phototube directly connected to the cathode of the modulator tube  
3255660 Optical testing apparatus with means to energize the detecting means  
3254218 Pulse paralysis system for scintillation detectors  
3251998 Apparatus for gating the photo-multiplier of a scintillation detector  
3244890 Photosensitive broadband coupler using wave guide  
3243593 Photoelectric apparatus for the measurement of a dimension of a moving body including means for illuminating a stationary area of the photocathode  
3243588 Scintillation detector system using a white light as a standard to stabilize the system  
3241435 Photographic color printing apparatus  
3240931 Spatial discriminator for particle beams  
3240334 Empty-bottle inspection system utilizing a photomultiplier tube  
3235765 Electron multiplier having an inclined field  
3227875 Gamma dose rate meter utilizing a scintillation detector  
3226552 Photomultiplier zero level control circuit  
3222980 Device for accurately measuring small amounts of radiant energy  
Matches 351 - 400 out of 530 < 1 2 3 4 5 6 7 8 9 10 11 >