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Wireless access system
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Patent number 5,936,544
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Issue date Aug 10, 1999
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Pittway Corporation
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Eric V. Gonzales
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G07 - CHECKING-DEVICES
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Battery missing indicator
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Patent number 5,191,855
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Issue date Mar 9, 1993
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Pittway Corporation
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Fred J. Conforti
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G08 - SIGNALLING
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Warning device
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Patent number 4,138,664
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Issue date Feb 6, 1979
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Pittway Corporation
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Frederick J. Conforti
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G08 - SIGNALLING
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Fire detector
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Patent number 4,020,479
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Issue date Apr 26, 1977
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Pittway Corporation
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Frederick J. Conforti
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G08 - SIGNALLING
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Warning device
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Patent number 3,932,850
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Issue date Jan 13, 1976
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Pittway Corporation
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Frederick J. Conforti
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G08 - SIGNALLING