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US2284173A
(en)
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Apparatus for recording and reproducing telephone messages
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US2221883A
(en)
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Telephone answering system
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US1947249A
(en)
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Telephonic telegraphy
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US2082303A
(en)
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Telephone system for recording and reproducing transmissions
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EP0083893B1
(fr)
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|
Système de transmission de messages à un poste téléphonique par la ligne d'abonné dans une installation téléphonique
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US1888904A
(en)
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Station calling device
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US2700067A
(en)
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Apparatus for magnetically storing teleprinter signals
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US1852877A
(en)
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Talking machine
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US2506437A
(en)
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|
Combined voice and facsimile system
|
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US2164038A
(en)
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|
Facsimile transmission and reproduction
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US2131202A
(en)
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|
Simplified teleprinter and system
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US1050777A
(en)
|
|
Phonographic wireless telephone.
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US1920729A
(en)
|
|
Telephone message recording and reproducing apparatus
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US2203877A
(en)
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|
Telephone message recording and reproducing apparatus
|
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US378436A
(en)
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|
delany |
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US1895015A
(en)
|
|
Telegraph repeater
|
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US1808916A
(en)
|
|
Circuit control system
|
|
CH294527A
(fr)
|
|
Radiotéléphone.
|
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US355662A
(en)
|
|
Printing telegraph |
|
US636209A
(en)
|
|
Telephonograph.
|
|
US717776A
(en)
|
|
Quadruplex telegraph system.
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US239579A
(en)
|
|
Telephone signaling apparatus |
|
US2144867A
(en)
|
|
Telephone system
|
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US2914607A
(en)
|
|
Facsimile phasing and repeating system
|
|
US923385A
(en)
|
|
Telautograph.
|