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. 14, 2009

Filed:

Jul. 08, 2004
Applicant:

William Duvall, Sudbury, MA (US);

Inventor:

William Duvall, Sudbury, MA (US);

Assignee:

LoJack Operating Company, LP, Westwood, MA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 5/14 (2006.01); B60R 25/10 (2006.01); G08B 1/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A system and technique for improving the speed and ease of missing vehicle location and recovery by vehicle-carried transponder periodic coded replies to radio interrogation by a network of (VHF) transmitting towers, by integrating a concealed GPS location receiver with the transponder and providing the GPS-obtained coordinate information through the VHF network to enable a preliminary initial recovery location from which to home-in for recovery by subsequent direction-finding from the periodic transponder responses. Other location-on-demand services are also readily operable through the use of this VHF network, including providing said GPS coordinate or location information on the Internet.


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