Thomas M. Fredericks

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Westbrook, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for detection of warning system breach
- Patent number 6,844,808
- Issue date Jan 18, 2005
- Whelen Engineering Company, Inc.
- Thomas M. Fredericks
- G08 - SIGNALLING
Information Patent Grant
Traffic management system
- Patent number 5,337,082
- Issue date Aug 9, 1994
- Whelen Technologies, Inc.
- Thomas M. Fredericks
- G01 - MEASURING TESTING
Information Patent Grant
Motion direction detection
- Patent number 5,170,162
- Issue date Dec 8, 1992
- Whelen Technologies, Inc.
- Thomas M. Fredericks
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for detection of warning system breach
- Publication number 20040212490
- Publication date Oct 28, 2004
- Whelen Engineering Company, Inc.
- Thomas M. Fredericks
- G08 - SIGNALLING