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Intrusion alarm system
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Patent number 5,283,551
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Issue date Feb 1, 1994
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Aritech Corporation
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John K. Guscott
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G08 - SIGNALLING
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Infrared detector
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Patent number 4,906,976
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Issue date Mar 6, 1990
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Aritech Corporation
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John K. Guscott
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G08 - SIGNALLING
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Alarm display
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Patent number D297128
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Issue date Aug 9, 1988
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ADT, Inc.
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John K. Guscott
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D10 - Measuring, testing, or signalling instruments
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Control and display system
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Patent number 4,728,936
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Issue date Mar 1, 1988
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ADT, Inc.
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John K. Guscott
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G06 - COMPUTING CALCULATING COUNTING
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Intrusion detector cover panel
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Patent number D275463
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Issue date Sep 11, 1984
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American District Telegraph Company
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Kenneth E. Beeson
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D10 - Measuring, testing, or signalling instruments
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Intrusion detector cover panel
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Patent number D275462
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Issue date Sep 11, 1984
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American District Telegraph Company
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Kenneth E. Beeson
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D10 - Measuring, testing, or signalling instruments
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Intrusion detector cover panel
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Patent number D275464
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Issue date Sep 11, 1984
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American District Telegraph Company
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Kenneth E. Beeson
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D10 - Measuring, testing, or signalling instruments
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Non-home run zoning system
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Patent number 4,468,664
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Issue date Aug 28, 1984
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American District Telegraph Company
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Aaron A. Galvin
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G08 - SIGNALLING
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Passive infrared detector
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Patent number 4,321,594
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Issue date Mar 23, 1982
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American District Telegraph Company
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Aaron A. Galvin
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G08 - SIGNALLING
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