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GB931979A
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|
Improvements in and relating to the evacuation of vacuum and gas filled envelopes
|
|
GB690438A
|
|
Improvements in and relating to thermionic valves and circuits
|
|
GB608047A
|
|
Improvements relating to electron beam valves
|
|
GB606177A
|
|
Improvements in and relating to electron valves
|
|
GB573209A
|
|
Improvements relating to the construction and assembly of electron discharge tubes
|
|
GB573208A
|
|
Improvements in and relating to thermionic valves and circuits
|
|
GB573205A
|
|
Improvements in and relating to beam valves
|
|
GB573206A
|
|
Improvements relating to cathodes for electron discharge tubes
|
|
GB573207A
|
|
Improvements in and relating to the production and control of electron streams
|
|
GB521199A
|
|
Improvements in and relating to the production and control of electron streams
|
|
GB521246A
|
|
Improvements in and relating to the production and control of electron streams
|
|
GB482719A
|
|
Improvements in and relating to thermionic valve circuits
|
|
GB482591A
|
|
Improvements in and relating to thermionic valves and circuits
|
|
GB478812A
|
|
Improvements in and relating to electron discharge tubes
|
|
GB461282A
|
|
Improvements relating to electron discharge tubes or thermionic valves and circuit arrangements for use therewith
|
|
GB461310A
|
|
Improvements relating to electron discharge tubes or thermionic valves and circuit arrangements for use therewith
|
|
GB406677A
|
|
Improvements in and relating to electric discharge tubes
|
|
GB385968A
|
|
Method for the control of electronic streams
|
|
GB375408A
|
|
Improvements in or relating to television and like systems
|
|
GB380429A
|
|
Method for the production and control of electronic streams
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