Assignee
SOUTHWESTERN BELL TELEPHONE CO
US·14 granted patents·1,442 citations·filing 1985–2003
Top patents by PatentIndex Score
14 records- 0190US7266154B2Digital subscriber line induction neutralizing transformer networkSOUTHWESTERN BELL TELEPHONE CO·Filed 2002·Granted Sep 4, 2007·231 cites·17 claims
- 0290US4889977AMethod of identifying the disposition of plug-in units at a warehouseSOUTHWESTERN BELL TELEPHONE CO·Filed 1987·Granted Dec 26, 1989·180 cites·2 claims
- 0389US5920846AMethod and system for processing a service request relating to installation, maintenance or repair of telecommunications services provided to a customer premisesSOUTHWESTERN BELL TELEPHONE CO·Filed 1996·Granted Jul 6, 1999·539 cites·33 claims
- 0488US7167550B2Apparatus and method for facilitating service management of communications services in a communications networkSOUTHWESTERN BELL TELEPHONE CO·Filed 2003·Granted Jan 23, 2007·65 cites·26 claims
- 0588US6778651B1Apparatus and method for facilitating service management of communications services in a communications networkSOUTHWESTERN BELL TELEPHONE CO·Filed 1998·Granted Aug 17, 2004·160 cites·20 claims
- 0673US5956714AQueuing system using a relational databaseSOUTHWESTERN BELL TELEPHONE CO·Filed 1997·Granted Sep 21, 1999·79 cites·14 claims
- 0772US5946372AApparatus and method for testing digital communications circuitsSOUTHWESTERN BELL TELEPHONE CO·Filed 1997·Granted Aug 31, 1999·51 cites·26 claims
- 0867US4971479APost driverSOUTHWESTERN BELL TELEPHONE CO·Filed 1987·Granted Nov 20, 1990·37 cites·21 claims
- 0965US6687335B1User interface and system to facilitate telephone circuit maintenance and testingSOUTHWESTERN BELL TELEPHONE CO·Filed 1998·Granted Feb 3, 2004·42 cites·19 claims
- 1057US5166890APerformance monitoring systemSOUTHWESTERN BELL TELEPHONE CO·Filed 1989·Granted Nov 24, 1992·25 cites·35 claims
- 1143US4904193AElectrical grounding clampSOUTHWESTERN BELL TELEPHONE CO·Filed 1988·Granted Feb 27, 1990·18 cites·32 claims
- 1234US5943392ADevice for measuring echo return loss in a two-two wire line systemSOUTHWESTERN BELL TELEPHONE CO·Filed 1997·Granted Aug 24, 1999·7 cites·19 claims
- 1333US4639555APair cut apparatus and method of useSOUTHWESTERN BELL TELEPHONE CO·Filed 1985·Granted Jan 27, 1987·6 cites·13 claims
- 1430US5953390ADevice for inducing a wink in a telephone systemSOUTHWESTERN BELL TELEPHONE CO·Filed 1997·Granted Sep 14, 1999·2 cites·18 claims
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