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DE1076171B
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1955-10-15 |
1960-02-25 |
Deutsche Bundespost |
Schaltungsanordnung zur selbsttaetigen Umschaltung eines Fernmelde-UEbertragungssystems, insbesondere eines Wechselstromtelegraphie-Systems, von einem ersten UEbertragungsweg auf einen zweiten UEbertragungsweg und umgekehrt
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NL238442A
(US07351834-20080401-C00087.png)
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1958-04-22 |
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NL259445A
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1959-12-30 |
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1959-12-30 |
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1960-01-04 |
1963-11-19 |
Bell Telephone Labor Inc |
Automatic system for selectively substituting spare channels for failed working channels in a multichannel multilink communication system
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1960-04-25 |
1962-10-23 |
Bell Telephone Labor Inc |
Remotely controlled selective switching system
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1961-05-26 |
1965-12-14 |
Bell Telephone Labor Inc |
Data communication system
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1965-02-09 |
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Automatic input power level adjustment apparatus for amplifier of a broadband repeater
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1971-02-16 |
1973-02-06 |
Stromberg Carlson Corp |
Automatic transfer arrangement for telephone system
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1971-11-24 |
1979-05-25 |
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1973-06-26 |
Bell Telephone Labor Inc |
Continuous inband testing of trunks with automatic trunk substitution upon detecting a defective trunk
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1972-06-05 |
1974-05-07 |
Bell Canada |
Means and method for telephone line disconnection in frequency division multiplexing
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1972-06-15 |
1974-01-18 |
Constr Telephoniques |
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1972-07-13 |
1974-02-08 |
Constr Telephoniques |
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1973-06-01 |
1975-02-04 |
Vidar Corp |
Automatic line transfer system and method for a communications system
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1975-01-27 |
1976-09-28 |
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Automatic span line switch
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1975-01-30 |
1977-06-14 |
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Redundant message metering network
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1975-06-06 |
1976-08-17 |
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Telephone line splicing apparatus
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1975-06-13 |
1976-11-09 |
Bell Telephone Laboratories, Incorporated |
Line protection switching system
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1979-01-10 |
1981-01-13 |
Intech Laboratories, Inc. |
One-for-n modem control apparatus
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1979-12-07 |
1981-06-12 |
Inst Francais Du Petrole |
Dispositif de transmission de donnees entre des dispositifs d'acquisition de donnees et un dispositif d'enregistrement
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1988-08-26 |
1993-03-09 |
Hitachi, Ltd. |
Network system having a line switching function
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1998-07-28 |
2002-11-12 |
Serconet Ltd. |
Local area network of serial intelligent cells
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1999-07-07 |
2005-10-18 |
Serconet Ltd. |
Local area network for distributing data communication, sensing and control signals
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2004-02-10 |
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Network for telephony and data communication
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2000-03-20 |
2003-04-15 |
Serconet Ltd. |
Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets
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2003-11-06 |
Deichstetter Eric A. |
Pair gain system
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2003-01-30 |
2010-12-30 |
Mosaid Technologies Inc |
Method and system for providing dc power on local telephone lines
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2004-01-13 |
2004-06-20 |
Yehuda Binder |
Information device
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