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3776272
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Patent number 3,776,272
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Issue date Dec 4, 1973
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F24 - HEATING RANGES VENTILATING
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Patent number 2,777,663
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Issue date Jan 15, 1957
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F24 - HEATING RANGES VENTILATING
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2002038
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Patent number 2,002,038
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Issue date May 21, 1935
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F24 - HEATING RANGES VENTILATING
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Patent number 1,952,361
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Issue date Mar 27, 1934
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F24 - HEATING RANGES VENTILATING
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Patent number 1,718,010
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F24 - HEATING RANGES VENTILATING
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Patent number 1,328,789
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Issue date Jan 20, 1920
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F24 - HEATING RANGES VENTILATING