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US1299608A
|
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Selective signaling apparatus.
|
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US1197542A
|
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Electrical step-by-step translating device.
|
|
US1151216A
|
|
Selective electrical signaling apparatus.
|
|
US1135920A
|
|
Selective electrical signaling.
|
|
US1229202A
|
|
Telegraphic receiver.
|
|
US1258809A
|
|
Transmitting apparatus for electric telegraphs and the like.
|
|
US1229201A
|
|
Selective signaling apparatus.
|
|
US1135322A
|
|
Transmitting apparatus for electrical signaling.
|
|
US1201621A
|
|
Means for synchronizing telegraphic and other apparatus.
|
|
US1135614A
|
|
Telegraphy.
|
|
US1135321A
|
|
Selective electrical signaling.
|
|
US1105922A
|
|
Telegraphy.
|
|
US1135613A
|
|
System of operating type-writers and the like.
|
|
US1060939A
|
|
Automatic telegraph-transmitter.
|
|
US1105921A
|
|
Punching-machine.
|
|
US1018519A
|
|
Perforating-machine.
|
|
US1105920A
|
|
Telegraphy.
|
|
US988811A
|
|
Telegraphy.
|
|
US1017169A
|
|
Method of and apparatus for transmitting signals over telegraphic circuits.
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