Osram thermionic diode valve

Osram thermionic diode valve

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Osram thermionic diode valve made for the General Electric Company

U33 PC 4

Details

Category:
Radio Communication
Object Number:
Y7001.777
Materials:
glass, plastic (unidentified), metal (unknown) and cardboard
Measurements:
overall: 135 mm x 52 mm x 52 mm,
type:
thermionic valve and diode