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Exothermic body
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Patent number 4,331,731
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Issue date May 25, 1982
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Mitsubishi Gas Chemical Company, Inc.
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Takashi Seike
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Electrochemical heating device
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Patent number 4,080,953
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Issue date Mar 28, 1978
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Minnesota Mining and Manufacturing Company
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William C. Mitchell
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F24 - HEATING RANGES VENTILATING
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3924603
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Patent number 3,924,603
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Issue date Dec 9, 1975
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F24 - HEATING RANGES VENTILATING
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3906926
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Patent number 3,906,926
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Issue date Sep 23, 1975
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F24 - HEATING RANGES VENTILATING
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3777816
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Patent number 3,777,816
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Issue date Dec 11, 1973
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E21 - EARTH DRILLING MINING
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3666563
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Patent number 3,666,563
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Issue date May 30, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3314413
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Patent number 3,314,413
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Issue date Apr 18, 1967
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F24 - HEATING RANGES VENTILATING
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3301250
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Patent number 3,301,250
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Issue date Jan 31, 1967
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3240396
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Patent number 3,240,396
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Issue date Mar 15, 1966
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3229681
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Patent number 3,229,681
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Issue date Jan 18, 1966
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A41 - WEARING APPAREL
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3228403
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Patent number 3,228,403
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Issue date Jan 11, 1966
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2757138
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Patent number 2,757,138
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Issue date Jul 31, 1956
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1991380
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Patent number 1,991,380
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Issue date Feb 19, 1935
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1729044
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Patent number 1,729,044
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Issue date Sep 24, 1929
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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1572975
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Patent number 1,572,975
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Issue date Feb 16, 1926
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1565509
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Patent number 1,565,509
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Issue date Dec 15, 1925
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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124594
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Patent number 124,594
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Issue date Mar 12, 1872
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F24 - HEATING RANGES VENTILATING