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Richard T. Carll
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Granby, CT, US
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last 30 patents
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Patent Grant
Fire and security system with multi detector-occupancy-temperature-...
Patent number
4,688,183
Issue date
Aug 18, 1987
United Technologies Corporation
Richard T. Carll
G08 - SIGNALLING
Information
Patent Grant
Digital PBX integrated workstation security system
Patent number
4,654,640
Issue date
Mar 31, 1987
United Technologies Corporation
Richard T. Carll
G08 - SIGNALLING
Information
Patent Grant
Telephone based control system
Patent number
4,551,832
Issue date
Nov 5, 1985
United Technologies Corporation
Richard T. Carll
F24 - HEATING RANGES VENTILATING
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Patent Grant
Computer network, line protocol system
Patent number
4,241,398
Issue date
Dec 23, 1980
United Technologies Corporation
Richard T. Carll
G06 - COMPUTING CALCULATING COUNTING