Mark D. Frost

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Piedmont, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for diagnosing and reporting failure of a vehicle...
- Patent number 5,835,871
- Issue date Nov 10, 1998
- Envirotest Systems, Inc.
- Mary V. Smith
- G01 - MEASURING TESTING
Information Patent Grant
Method and system for diagnosing and reporting failure of a vehicle...
- Patent number 5,729,452
- Issue date Mar 17, 1998
- Envirotest Acquisition Co.
- Mary V. Smith
- G01 - MEASURING TESTING