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DIFF Subgroup
H01J 31/495

Pick-up tubes adapted for an input of sonic, ultrasonic or mechanical vibrations and having an electric output

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Cathode-ray tubes; Electron-beam tubes > having a screen on or from which an image or pattern is formed, picked-up, converted, or stored > Pick-up tubes adapted for an input of sonic, ultrasonic or mechanical vibrations and having an electric output

CPC:

Cathode ray tubes; Electron beam tubes (H01J25/00, H01J33/00, H01J35/00, H01J37/00 take precedence; details of cathode ray tubes or of electron beam tubes H01J29/00) > having a screen on or from which an image or pattern is formed, picked up, converted, or stored > Pick-up tubes adapted for an input of sonic, ultrasonic or mechanical vibrations and having an electric output

No child classifications to compare. This is a leaf node in both IPC and CPC.