Charles E. Sawabini

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Carlisle, MA, 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
Distance determination and alarm system
- Patent number 5,589,821
- Issue date Dec 31, 1996
- Secure Technologies, Inc.
- Roy Sallen
- G08 - SIGNALLING