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Solid fuel boiler
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Patent number 9,506,669
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Issue date Nov 29, 2016
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Dae Kyoum Kim
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F24 - HEATING RANGES VENTILATING
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865238
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Patent number 865,238
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Issue date Sep 3, 1907
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F24 - HEATING RANGES VENTILATING
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500554
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Patent number 500,554
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Issue date Jul 4, 1893
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F24 - HEATING RANGES VENTILATING
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402602
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Patent number 402,602
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Issue date May 7, 1889
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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374649
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Patent number 374,649
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Issue date Dec 13, 1887
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F24 - HEATING RANGES VENTILATING
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356675
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Patent number 356,675
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Issue date Jan 25, 1887
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F24 - HEATING RANGES VENTILATING
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166813
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Patent number 166,813
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Issue date Aug 17, 1875
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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124345
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Patent number 124,345
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Issue date Mar 5, 1872
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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32731
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Patent number 32,731
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Issue date Jul 2, 1861
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE