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US1943475A
(en)
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System for selective calling of telegraph stations
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US2379865A
(en)
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Telegraph code converter
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US2264052A
(en)
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Automatic quotation system
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US2052677A
(en)
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Telegraph system and apparatus
|
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US2190540A
(en)
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Printing telegraph system
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US2484838A
(en)
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Telegraph exchange system
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US1943654A
(en)
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Monitor printer system for quotation boards
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US2154592A
(en)
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Teletypewriter automatic switching system
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US2139452A
(en)
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Printing telegraph receiver
|
|
US1364086A
(en)
|
|
Telegraph system |
|
US2336910A
(en)
|
|
Telegraph transmitter
|
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US2522003A
(en)
|
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Teletypewriter switching system
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US1275559A
(en)
|
|
Auxiliary signal arrangement for printing-telegraph systems.
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US2341568A
(en)
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Message tabulating apparatus and system
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US1374192A
(en)
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|
Amos p |
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US1653606A
(en)
|
|
Printing telegraphy |
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US1917195A
(en)
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Extended channel system
|
|
US3423519A
(en)
|
|
Switching arrangement for the actuation of a tariff-charge device in teletype connections
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US2268631A
(en)
|
|
Printing telegraph system and apparatus
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US695203A
(en)
|
|
Automatic telegraph.
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|
US1765472A
(en)
|
|
Telegraph system
|
|
US1834828A
(en)
|
|
Printing telegraph system
|
|
US1103133A
(en)
|
|
Printing-telegraph receiver.
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US2403441A
(en)
|
|
Telegraph system
|
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US1187035A
(en)
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|
Telegraphy.
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