|
USRE117E
(en)
|
|
Improvement in electro-magnetic telegraphs |
|
US1647A
(en)
|
|
Improvement in the mode of communicating information by signals by the |
|
USRE79E
(en)
|
|
Xx x - x - - x |
|
Sabine
|
|
The electric telegraph |
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US438430A
(en)
|
|
Machine |
|
US314525A
(en)
|
|
estienne |
|
US402415A
(en)
|
|
Mark w |
|
US120289A
(en)
|
|
Improvement in telegraph-recording instruments |
|
US1118650A
(en)
|
|
Printing-telegraph alphabet.
|
|
US166712A
(en)
|
|
Improvement in telegraph-transmitters |
|
US727089A
(en)
|
|
Printing-telegraph.
|
|
US1035568A
(en)
|
|
Telautograph.
|
|
US267967A
(en)
|
|
Polarized ink-writer |
|
US4453A
(en)
|
|
Improvement in electro-magnetic telegraphs |
|
US153593A
(en)
|
|
Improvement in telegraph registers and sounders |
|
US319224A
(en)
|
|
Automatic instructor |
|
US1035257A
(en)
|
|
Instrument for teaching telegraphic codes.
|
|
US588251A
(en)
|
|
thomson |
|
US394960A
(en)
|
|
dewey |
|
US213779A
(en)
|
|
Improvement in automatic telegraphs |
|
US31902A
(en)
|
|
Improvement in electro-magnetic telegraphing |
|
US299011A
(en)
|
|
Watchman s electric recorder |
|
US250132A
(en)
|
|
Eobeet k |
|
US569598A
(en)
|
|
Max arndt |
|
US102320A
(en)
|
|
Improvement in printing-telegraph apparatus |
