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Smoke chamber
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Patent number 6,778,091
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Issue date Aug 17, 2004
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James R. Qualey
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G08 - SIGNALLING
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Smoke detector shield
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Patent number 6,543,735
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Issue date Apr 8, 2003
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ADT Services AG
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John Robert Haynes
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G08 - SIGNALLING
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Smoke detector
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Patent number D392573
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Issue date Mar 24, 1998
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Simplex Time Recorder Company
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Timothy C. Repp
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D10 - Measuring, testing, or signalling instruments
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Smoke/fire detector
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Patent number 5,710,541
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Issue date Jan 20, 1998
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Simplex Time Recorder Co.
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Lawrence G. Stanley
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G08 - SIGNALLING
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Smoke detector
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Patent number D388351
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Issue date Dec 30, 1997
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Simplex Time Recorder Company
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Timothy C. Repp
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D10 - Measuring, testing, or signalling instruments
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Smoke detector
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Patent number D388352
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Issue date Dec 30, 1997
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Simplex Time Recorder Company
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Timothy C. Repp
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D10 - Measuring, testing, or signalling instruments
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Grille for a smoke detector
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Patent number D383407
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Issue date Sep 9, 1997
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Simplex Time Recorder Company
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Timothy C. Repp
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D10 - Measuring, testing, or signalling instruments
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Heat detector
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Patent number D377460
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Issue date Jan 21, 1997
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Simplex Time Recorder Company
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Wayne Nelson
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D10 - Measuring, testing, or signalling instruments
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Fire alarm heat detector
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Patent number 5,450,066
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Issue date Sep 12, 1995
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Simplex Time Recorder Company
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Donald D. Brighenti
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G08 - SIGNALLING
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