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Detection apparatus
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Patent number 3,976,121
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Issue date Aug 24, 1976
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Marston Radiators Limited
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Martin Stanley Johnson
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F28 - HEAT EXCHANGE IN GENERAL
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3677334
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Patent number 3,677,334
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Issue date Jul 18, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3651863
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Patent number 3,651,863
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Issue date Mar 28, 1972
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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3602294
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Patent number 3,602,294
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Issue date Aug 31, 1971
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F24 - HEATING RANGES VENTILATING
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3130778
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Patent number 3,130,778
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Issue date Apr 28, 1964
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F28 - HEAT EXCHANGE IN GENERAL
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1544199
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Patent number 1,544,199
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Issue date Jun 30, 1925
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F28 - HEAT EXCHANGE IN GENERAL
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1518777
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Patent number 1,518,777
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Issue date Dec 9, 1924
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1323812
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Patent number 1,323,812
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Issue date Dec 2, 1919
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F24 - HEATING RANGES VENTILATING
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1135661
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Patent number 1,135,661
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Issue date Apr 13, 1915
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F24 - HEATING RANGES VENTILATING
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462631
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Patent number 462,631
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Issue date Nov 3, 1891
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F24 - HEATING RANGES VENTILATING
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367706
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Patent number 367,706
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Issue date Aug 2, 1887
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F24 - HEATING RANGES VENTILATING