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1988693
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B60 - VEHICLES IN GENERAL
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1955096
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Patent number 1,955,096
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Issue date Apr 17, 1934
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B60 - VEHICLES IN GENERAL
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1879152
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Patent number 1,879,152
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Issue date Sep 27, 1932
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F28 - HEAT EXCHANGE IN GENERAL
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Patent number 1,869,534
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Issue date Aug 2, 1932
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F28 - HEAT EXCHANGE IN GENERAL
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1854213
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Patent number 1,854,213
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F28 - HEAT EXCHANGE IN GENERAL
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1850822
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Patent number 1,850,822
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F24 - HEATING RANGES VENTILATING
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Patent number 1,807,164
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F28 - HEAT EXCHANGE IN GENERAL
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1769707
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Patent number 1,769,707
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Issue date Jul 1, 1930
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F24 - HEATING RANGES VENTILATING