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H04M2203/058

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HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M2203/00Aspects of automatic or semi-automatic exchanges

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H04M2203/058signature devices

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Patents Grantslast 30 patents

Information Patent Grant
Fast seamless joining of channels in a multi-channel communication...
- Patent number 8,300,518
- Issue date Oct 30, 2012
- Alcatel Lucent
- Alexei Ashikhmin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signature device for home phoneline network devices
- Patent number 6,535,580
- Issue date Mar 18, 2003
- Agere Systems Inc.
- Steven E. Strauss
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electric circuit connector with auto-termination
- Patent number 5,483,573
- Issue date Jan 9, 1996
- Keptel, Inc.
- George R. Steenton
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automated channel test unit
- Patent number 5,018,184
- Issue date May 21, 1991
- AT&T Bell Laboratories
- Lane J. Abrams
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone subscriber loop test system
- Patent number 4,852,145
- Issue date Jul 25, 1989
- Teradyne, Inc.
- Morey S. Bevers
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio-visual line test termination device
- Patent number 4,388,501
- Issue date Jun 14, 1983
- TII Industries Inc.
- Omprakash G. Ahuja
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Varying impedance line test termination device
- Patent number 4,350,849
- Issue date Sep 21, 1982
- TII Industries Inc.
- Omprakash G. Ahuja
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Verified Calling Party Information Display Confirmation System
- Publication number 20220086276
- Publication date Mar 17, 2022
- Douglas Ranalli
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Fast Seamless Joining of Channels in a Multi-Channel Communication...
- Publication number 20090245081
- Publication date Oct 1, 2009
- Alexei Ashikhmin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE