Dennis L. Smith

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Severna Park, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for measuring particulates in vehicle emissions
- Patent number 6,841,778
- Issue date Jan 11, 2005
- Environmental Systems Products Holdings Inc.
- Peter S. Shifflett
- G01 - MEASURING TESTING
Information Patent Grant
Remote vehicle emission analyzer with light conveyance to detectors...
- Patent number 5,644,133
- Issue date Jul 1, 1997
- Envirotest Systems, Corp.
- John Didomenico
- G01 - MEASURING TESTING
Information Patent Grant
Remote sensor device for monitoring motor vehicle exhaust systems
- Patent number 5,371,367
- Issue date Dec 6, 1994
- Envirotest Systems Corp.
- John DiDomenico
- G01 - MEASURING TESTING