Photoelectric multiplier tube of reduced length
Photoelectron beam converting device and method of driving the s
Photoelectron emitting device having a photocathode made of phot
Photoemissive cathode formed on conductive strips
Photoemissive trigger for backlighted thyratron switches
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier
Photomultiplier