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H04Q2213/175

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HELECTRICITY H04Electric communication H04QSELECTING H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems

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H04Q2213/175Other signals

Industries

Patents Grantslast 30 patents

Information Patent Grant
Method for sending out absent messages from ISDN exchange system
- Patent number 5,937,039
- Issue date Aug 10, 1999
- SamSung Electronics Co., Ltd.
- Seung-Hwan Cho
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Supervisory image communication system through an integrated servic...
- Patent number 5,550,835
- Issue date Aug 27, 1996
- NEC Corporation
- Kimihiro Mano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ISDN interfacing of personal computers
- Patent number 5,444,703
- Issue date Aug 22, 1995
- Ugo O. Gagliardi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Simultaneous voice and data system using the existing two-wire inte...
- Patent number 5,214,650
- Issue date May 25, 1993
- AG Communication Systems Corporation
- Robert E. Renner
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Semi-automated operator assistance telecommunication calls
- Patent number 5,046,183
- Issue date Sep 3, 1991
- AT&T Bell Laboratories
- Gary L. Dorst
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Time and charges information delivery for operator assistance telec...
- Patent number 5,043,983
- Issue date Aug 27, 1991
- AT&T Bell Laboratories
- Gary L. Dorst
- H04 - ELECTRIC COMMUNICATION TECHNIQUE