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Showing 1 to 20 of 415 results

PATENT /PUB No. Country Patent Title Patent Owner Filing Date Issue/Pub Date Status
6529572 US Network independent clocking in a telecommunication system Apr 5, 1999 Mar 4, 2003 Expired
5917315 US Receiver for spectrum analysis Sep 18, 1997 Jun 29, 1999 Expired
6157643 US Switching fabric May 4, 1999 Dec 5, 2000 Expired
5913169 US Cellular mobile station system Jun 13, 1997 Jun 15, 1999 Expired
6161085 US Method and arrangement for adding a new speech encoding method to an existing telecommunication system Oct 9, 1998 Dec 12, 2000 Expired
5715279 US Method for estimating a channel, and a receiver Sep 11, 1995 Feb 3, 1998 In Force
6016337 US Televoting in an intelligent network Oct 10, 1997 Jan 18, 2000 In Force
6121927 US Determination of terminal location in a radio system Apr 27, 1999 Sep 19, 2000 Expired
6321066 US Method and apparatus for directional radio communication Dec 22, 1998 Nov 20, 2001 Expired
5802457 US Method for realizing ambience listening, and radio unit Apr 19, 1996 Sep 1, 1998 Expired
6272348 US Method for channel allocation Sep 23, 1999 Aug 7, 2001 Expired
6003031 US Method and system of providing subscriber-specified service by an intelligent network Oct 6, 1997 Dec 14, 1999 In Force
6225888 US Authentication between communicating parties in a telecommunications network Jun 8, 1999 May 1, 2001 In Force
2002/0077,150 US BASE STATION WITH ANTENNA, INCLUDING AN AMPLIFIER, LOCATED AT A DISTANCE FROM THE BASE STATION Dec 11, 1998 Jun 20, 2002 Abandoned
6169900 US Reverse inter-MSC handover Jun 26, 1998 Jan 2, 2001 Expired
5771460 US Processing signalling messages in a mobile communication system Dec 18, 1995 Jun 23, 1998 Expired
5570353 US Method of transmitting and receiving power control messages in a CDMA cellular radio system Nov 3, 1995 Oct 29, 1996 Expired
5629974 US Communication system providing mobility management internetworking between a C-interface radio system and an overlay mobile radio network Nov 16, 1995 May 13, 1997 In Force
6484031 US Locating method and arrangement Aug 26, 1999 Nov 19, 2002 Expired
6373833 US CELL EXPANSION IN A TIME DIVISION CELLULAR SYSTEM USING FREQUENCY CONVERTING REPEATERS Jan 25, 1999 Apr 16, 2002 Expired

Showing 1 to 20 of 415 results

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