Stephen E. Crook

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Horsham, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Frequency agile security apparatus
- Patent number 4,494,111
- Issue date Jan 15, 1985
- General Instrument Corporation
- Joseph D. Rocci
- G08 - SIGNALLING
Information Patent Grant
Security apparatus with alarm search and verification capability
- Patent number 4,477,799
- Issue date Oct 16, 1984
- General Instrument Corporation
- Joseph D. Rocci
- G08 - SIGNALLING