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Wireless valve

Description

Wireless 'R' valve, cylindrical pattern, probably No. 31895, Marconi-Osram Valve Co. Ltd.

Museum reference

T.1932.17

Collection

Industry and Commerce : Communications

Object name

Wireless valve

Production information

Marconi-Osram Valve Co., Wireless equipment maker

Date

1920 - 1930

Materials

Glass, Metal

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