William L. Hoag

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Farmers Branch, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for determining expected time of arrival
- Patent number 5,987,377
- Issue date Nov 16, 1999
- Highwaymaster Communications, Inc.
- Kenneth R. Westerlage
- G08 - SIGNALLING
Information Patent Grant
Method and apparatus for determining tax of a vehicle
- Patent number 5,970,481
- Issue date Oct 19, 1999
- Highwaymaster Communications, Inc.
- Kenneth R. Westerlage
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for determining expected time of arrival
- Patent number 5,724,243
- Issue date Mar 3, 1998
- Highwaymaster Communications, Inc.
- Kenneth R. Westerlage
- G08 - SIGNALLING
Information Patent Grant
Method and apparatus for determining tax of a vehicle
- Patent number 5,694,322
- Issue date Dec 2, 1997
- Highwaymaster Communications, Inc.
- Kenneth R. Westerlage
- G06 - COMPUTING CALCULATING COUNTING