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US2638506A
(en)
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Electrical storage of information on gas-filled tubes
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GB711498A
(en)
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Apparatus for synthesizing facsimile signals from coded signals
|
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GB592174A
(en)
|
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Improvements in or relating to electric impulse responsive apparatus
|
|
US2505006A
(en)
|
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Gaseous discharge device
|
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GB787945A
(en)
|
|
Improvements in or relating to automatic signalling systems
|
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SE182377C1
(https=)
|
|
|
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GB769726A
(en)
|
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Improvements relating to digital calculating apparatus
|
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GB1342956A
(en)
|
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Electric valve switching matrices
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US2637017A
(en)
|
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Translating circuit |
|
US2629021A
(en)
|
|
Coordinate switching and lock-out circuit in interpolated speech receiving system
|
|
GB1003773A
(en)
|
|
Improvements in or relating to switching networks
|
|
US2299898A
(en)
|
|
Telephone system
|
|
US2550585A
(en)
|
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Telephone identification circuit
|
|
US2339684A
(en)
|
|
Electronic control for telecommu |
|
US3111659A
(en)
|
|
Translating apparatus as employed in automatic telephone and like systems
|
|
US2799806A
(en)
|
|
Electrical gas discharge tube circuits
|
|
GB924491A
(en)
|
|
Improvements relating to arrangements for automatically identifying calling numbers in telephone systems
|
|
US3156898A
(en)
|
|
Translator
|
|
US3140480A
(en)
|
|
Signal converters
|
|
ES253829A1
(es)
|
|
Una disposiciën para convertir grupos con elementos de cëdigo bivalentes
|
|
US3260839A
(en)
|
|
Scale change pulse counter
|
|
US2788443A
(en)
|
|
Shift register circuit
|
|
JPS6046597B2
(ja)
|
|
サイリスタスイツチ回路
|
|
US2743394A
(en)
|
|
Method of operating cold cathode stepping tubes
|
|
US1353065A
(en)
|
|
Associated-switchboard telephone system
|