Wireless valve

Description

Métal wireless "R" valve, glass tube with amber glass innner mount and brass cap, G-D-E-R etched on tube, made by Compagnie des Lampes, Ivry, France,

Museum reference

T.1932.12.2

Collection

Industry and Commerce : Communications

Object name

Wireless valve

Production information

Compagnie des Lampes
Ivry, France, Western Europe

Date

1915 - 1920

Materials

Glass, Brass

Physical description

Glass bulb, metal inscription, amber glass inner mount, brass cap

Associations

Groupement pour le Dèveloppement des Èmissions Radiophoniques