The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 05, 1994

Filed:

May. 07, 1993
Applicant:
Inventors:

Louise A Stilp, Broomall, PA (US);

Curtis A Knight, Washington, DC (US);

John C Webber, Herndon, VA (US);

Assignee:

Associated RT, Inc., Pittsburgh, PA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ; G01S / ; H04M / ;
U.S. Cl.
CPC ...
342387 ; 342457 ; 379 58 ;
Abstract

A cellular telephone location system for automatically recording the location of one or more mobile cellular telephones comprises three or more cell site systems 12. Each cell site system is located at a cell site of a cellular telephone system. Each cell site system includes an antenna that may be mounted on the same tower or building as the antenna employed by the cellular telephone system and equipment that may be housed in the equipment enclosure of the corresponding cell site. The cell site systems are coupled via T1 communication links 14 to a central site 16. The central site may be collocated with the cellular telephone system's MTSO. The central site 16 is further coupled to a database 20, which may be remotely located from the central site and made available to subscribers.

Published as:
US5327144A; ZA941019B; CA2161333A1; WO9427160A1; AU6094094A; TW238446B; TW264595B; BR9406463A; EP0700525A1; EP0700525A4; JPH08508381A; US5608410A; AU677292B2; RU2107925C1; EP0700525B1; ATE165169T1; SG48730A1; CA2161333C; DE69409645D1; DE69409645T2; KR0153589B1; JP2843951B2; HK1010461A1;

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