Richard Wissenbach

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Chelmstad, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-function flow monitoring apparatus with area velocity sensor...
- Patent number 5,633,809
- Issue date May 27, 1997
- American Sigma, Inc.
- Richard Wissenbach
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Fiber optic system and method
- Patent number 5,274,721
- Issue date Dec 28, 1993
- American Sigma, Inc.
- William D. Dickinson
- G02 - OPTICS