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Showing 1 to 20 of 412 results

PATENT /PUB No. Country Patent Title Patent Owner Filing Date Issue/Pub Date Status
6233569 US Event recording in a service database system Feb 16, 1999 May 15, 2001 Expired
5418787 US Signalling method for a radio system Dec 10, 1993 May 23, 1995 Expired
6167079 US Method for identifying data transmission rate, and a receiver Aug 28, 1997 Dec 26, 2000 Expired
5604728 US Method for testing a transceiver, and base station of a time-divisional radicommunication system Feb 9, 1995 Feb 18, 1997 In Force
5668804 US FOR A DIGITAL TIME DIVISION MULTIPLE ACCESS RADIO NETWORK Jan 5, 1996 Sep 16, 1997 In Force
5088112 US AN INTERFACE UNIT Nov 21, 1989 Feb 11, 1992 Expired
6171039 US Locking mechanism for connector May 11, 1999 Jan 9, 2001 Expired
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
6321066 US Method and apparatus for directional radio communication Dec 22, 1998 Nov 20, 2001 Expired
6121927 US Determination of terminal location in a radio system Apr 27, 1999 Sep 19, 2000 Expired
5802457 US Method for realizing ambience listening, and radio unit Apr 19, 1996 Sep 1, 1998 Expired
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
6225888 US Authentication between communicating parties in a telecommunications network Jun 8, 1999 May 1, 2001 In Force
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
6161085 US Method and arrangement for adding a new speech encoding method to an existing telecommunication system Oct 9, 1998 Dec 12, 2000 Expired
5913169 US Cellular mobile station system Jun 13, 1997 Jun 15, 1999 Expired
5715279 US Method for estimating a channel, and a receiver Sep 11, 1995 Feb 3, 1998 In Force

Showing 1 to 20 of 412 results

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