Operator's time recording or indicating arrangements

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CPC
H04M15/20

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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications

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H04M15/20Operator's time recording or indicating arrangements

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Patents Grantslast 30 patents

Information Patent Grant
Method, apparatus, and system for releasing resources
- Patent number 8,489,756
- Issue date Jul 16, 2013
- Huawei Technologies Co., Ltd.
- Changjiu Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for a long distance conference call discount feature
- Patent number 6,909,779
- Issue date Jun 21, 2005
- BellSouth Intellectual Property, Inc.
- Ray Rauba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone time recorder
- Patent number 4,161,626
- Issue date Jul 17, 1979
- Tim R. Waldo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
METHOD, APPARATUS, AND SYSTEM FOR RELEASING RESOURCES
- Publication number 20120131207
- Publication date May 24, 2012
- Huawei Technologies Co., Ltd
- Changjiu Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for Charge Display for Sip Connections on Several Terminals
- Publication number 20080194230
- Publication date Aug 14, 2008
- NOKIA SIEMENS NETWORKS GMBH & CO. KG
- Renate Zygan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE