Drew E. Sunstein

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Hollis, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Distance determination and alarm system
- Patent number 5,661,460
- Issue date Aug 26, 1997
- Secure Technologies, Inc.
- Roy Sallen
- G08 - SIGNALLING
Information Patent Grant
Enhanced system for transmission loss comparison
- Patent number 4,856,906
- Issue date Aug 15, 1989
- Circuits and Systems, Inc.
- Drew E. Sunstein
- G01 - MEASURING TESTING
Information Patent Grant
System for transmission loss comparison
- Patent number 4,759,631
- Issue date Jul 26, 1988
- Circuits and Systems, Inc.
- Drew E. Sunstein
- H04 - ELECTRIC COMMUNICATION TECHNIQUE