Vehicle locating and communicating method and apparatus

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Inventor

Wortham; Larry C. (Garland, TX)

Owner/Assignee

HighwayMaster Communications, Inc. (Dallas, TX)
Patent assignment
All assignments

Publication Date

March 16, 1999

Application Number

049573

Filing Date

March 26, 1998

US Classification

701/300 455/456.1 455/457

Int'l Classification

H04Q 007/22

Examiner

Zanelli; Michael

Assistant Examiner

Attorney/Law Firm

Baker & Botts, L.L.P.
Address

Parent Case

CROSS REFERENCE TO RELATED APPLICATIONS This application is a continuation of application Ser. No. 08/900,099, filed Jul. 25, 1997now U.S. Pat. No. 5,832,394, entitled "Vehicle Locating and Communicating Method and Apparatus" by Larry C. Wortham, which is a continuation of application Ser. No. 08/628,827, filed Apr. 5, 1996, entitled "Vehicle Locating and Communicating Method and Apparatus" by Larry C. Wortham, now U.S. Pat. No. 5,652,707, issued Jul. 29, 1997; which is a continuation of application Ser. No. 08/406,390, filed Mar. 17, 1995, entitled "Vehicle Locating and Communicating Method and Apparatus" by Larry C. Wortham, now U.S. Pat. No. 5,519,621, issued May 21, 1996; which is a continuation of U.S. application Ser. No. 08/279,211, filed Jul. 22, 1994, entitled "Vehicle Locating and Communicating Method and Apparatus" by Larry C. Wortham, now U.S. Pat. No. 5,513,111, issued Apr. 30, 1996; which is a continuation of U.S. application Ser. No. 08/178,022, filed Jan. 6, 1994, entitled "Vehicle Locating and Communicating Method and Apparatus" by Larry C. Wortham, now U.S. Pat. No. 5,398,190, issued Mar. 14, 1995; which is a continuation of application Ser. No. 07/920,644, filed Jul. 28, 1992, entitled "Vehicle Locating and Communicating Method and Apparatus Using Cellular Telephone Network" by Larry C. Wortham, now U.S. Pat. No. 5,299,132, issued Mar. 29, 1994; which is a continuation of application Ser. No. 07/642,436, filed Jan. 17, 1991, entitled "Vehicle Locating and Communicating Method and Apparatus" by Larry C. Wortham, now U.S. Pat. No. 5,155,689, issued Oct. 13, 1992.

Priority Data

USPTO Field of Search

701/300 340/989 340/990 340/992 455/456 455/457

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vehicle locating communicating

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