Ralph A. Giffone

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Brighton, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-compensating projected-beam smoke detector
- Patent number 4,827,247
- Issue date May 2, 1989
- ADT, Inc.
- Ralph A. Giffone
- G08 - SIGNALLING
Information Patent Grant
Electrical interference free projected beam smoke detector
- Patent number 4,823,015
- Issue date Apr 18, 1989
- ADT, Inc.
- Aaron A. Galvin
- G08 - SIGNALLING
Information Patent Grant
Self-diagnostic projected-beam smoke detector
- Patent number 4,749,871
- Issue date Jun 7, 1988
- ADT, Inc.
- Aaron A. Galvin
- G08 - SIGNALLING
Information Patent Grant
Modular transceiver with adjustable specular member
- Patent number 4,687,924
- Issue date Aug 18, 1987
- ADT Inc.
- Aaron A. Galvin
- G08 - SIGNALLING