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Image
Has Image
101
Non-Commercial Use
11
Category
Radio Communication
133
Electronic Components
11
Cinematography
1
Collection
Kodak Collection
1
Object type
triode valve
145
thermionic valve
79
triode valve; thermionic valve
46
thermionic valve; triode valve
32
tetrode
2
triode valve; tetrode
1
triode valve; thermionic valve; tetrode
1
Maker
Marconi Osram Valve Co
31
Marconi Osram Valve Company Limited
11
British Thomson-Houston Company Limited
10
Metropolitan-Vickers Electrical Company Limited
7
A C Cossor Limited
6
Edison Swan Electric Co. Ltd
6
General Electric Company Limited
5
Burndept Limited
3
Mullard Radio Valve Company Limited
3
Mullard Wireless Service Co. Ltd
3
Place of origin
England
98
England, United Kingdom
98
United States
11
Germany
5
United Kingdom
4
Great Britain
3
Great Britain, United Kingdom
3
Austria
2
Belgium
1
Berlin
1
Date
From
To
filter
Thermionic triode valve
Mazda triode valve
Thermionic triode valve
circa 1920s-1930s
Mullard D0.6 triode
Wade Bequest: DER triode radio valve
Wade Bequest: DE6b triode radio valve with green tint
KTD power amplifier
1918
Wade Bequest: DE6 triode radio valve with blue tint
Marconi thermionic triode valve
1943
Marconi Osram thermionic triode valve
1923
Marconi Osram thermionic triode valve
1927
Marconi thermionic triode valve
1923
Edison Swan thermionic triode valve
1932
Marconi thermionic triode valve
1925
Metropolitan-Vickers thermionic triode valve
1925
Marconi Osram thermionic triode valve
1925
Marconiphone thermionic triode valve
1942
Marconi Osram thermionic triode valve
1925
Marconi Osram thermionic triode valve
1925
Mullard thermionic triode valve
1928
Moorhead thermionic triode valve
1922
British Thomson-Houston thermionic triode valve
1924
Metropolitan-Vickers Cosmos thermionic triode valve
1923
Cossor thermionic triode valve
1932
Thermionic triode valve
1924
Wade Bequest: DER triode radio valve
Wade Bequest: ORA triode radio valve
British Thomson-Houston thermionic triode valve
1928
Metropolitan-Vickers thermionic triode valve
1925
Marconi Osram thermionic triode valve
1932
Marconi thermionic triode valve
1927
Marconi thermionic triode valve
1923
Ediswan thermionic triode valve
1923
Neutron thermionic triode valve
1930
Mullard ORA triode
Marconi-Osram LS3 triode, BBC-marked
Triotron thermionic triode valve
1935
Amrex thermionic triode valve
circa 1923
Thermionic triode valve
Thermionic triode valve
Thermionic triode valve
Thermionic triode valve
Marconi Osram thermionic triode valve
1925
Cossor thermionic triode valve
1932
Marconi thermionic triode valve
1923
Wade Bequest: ONEVOLT ORA triode radio valve
Wade Bequest: DER triode radio valve
Edison Swan thermionic triode valve
1930
Marconi triode valve
1930
British Thomson-Houston thermionic triode valve
1924
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