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US2747011A
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Scanning apparatus for perforated code tape
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US2915586A
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Teletypewriter
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US2819338A
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Teleprint receiver
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US2790026A
|
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Teletypewriters
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US2712036A
|
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Teletypewriter keyboard
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US2693502A
|
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Teleprinter subscriber station
|
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US2657260A
|
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Apparatus for the transmission of current pulse combinations, particularly for teletyping
|
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US2768233A
|
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Teleprinter for automatic telex service
|
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US2612556A
|
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Translating apparatus for electric signal pulse combinations
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US2651676A
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Electric current impulse transmitter
|
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GB654155A
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Improvements in or relating to communication installations
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GB604547A
|
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Prepayment coin-box telephone installation
|
|
US2489659A
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Number indicator for telephone substations
|
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GB424534A
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Selector arrangement for direct call telephone systems
|
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US1939513A
|
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Coin checking device for coin-freed telephone installations
|
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GB384752A
|
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An improved coin checking device for coin freed telephone installations
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