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GB499856A
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Improvements in circuit arrangements for gas discharge valves
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GB451993A
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Improvements in means for controlling fields of incandescent lamps
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GB459291A
|
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Improvements in electrical arrangement for controlling incandescent lamp screens adapted to reproduce pictures
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ES138478A1
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A connection system for incandescent lamps cinematographs with control of double anode gas discharge tubes, equipped with grid.
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GB452859A
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Improvements in electric arrangements for controlling electric lamps of a lamp screen adapted to reproduce pictures
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US2026437A
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Control device for incandescent lamp cinematographic apparatus
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CA358968A
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Picture and communication displaying system
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