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

Full Title

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

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC ELEMENTS

Subclass:

ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS