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Electrochemical gas sensor
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Patent number 6,129,825
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Issue date Oct 10, 2000
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Senco Sensors Inc.
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John Mallory
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G01 - MEASURING TESTING
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Central monitor for home security system
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Patent number 4,581,606
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Issue date Apr 8, 1986
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Isotec Industries Limited
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John Mallory
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Smoke detector cover
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Patent number D271089
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Issue date Oct 25, 1983
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Isotec Industries Limited
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John Mallory
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D10 - Measuring, testing, or signalling instruments
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Dual ionization chamber
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Patent number 4,245,174
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Issue date Jan 13, 1981
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Isotec Industries Limited
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John Mallory
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G08 - SIGNALLING