-
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1823661
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Patent number 1,823,661
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Issue date Sep 15, 1931
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F24 - HEATING RANGES VENTILATING
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1816163
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Patent number 1,816,163
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Issue date Jul 28, 1931
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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1790764
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Patent number 1,790,764
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Issue date Feb 3, 1931
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F26 - DRYING
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1684118
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Patent number 1,684,118
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Issue date Sep 11, 1928
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B60 - VEHICLES IN GENERAL
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1319621
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Patent number 1,319,621
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Issue date Oct 21, 1919
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F28 - HEAT EXCHANGE IN GENERAL
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1292615
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Patent number 1,292,615
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Issue date Jan 28, 1919
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F24 - HEATING RANGES VENTILATING
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1267185
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Patent number 1,267,185
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Issue date May 21, 1918
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F28 - HEAT EXCHANGE IN GENERAL
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1073351
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Patent number 1,073,351
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Issue date Sep 16, 1913
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F28 - HEAT EXCHANGE IN GENERAL
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937624
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Patent number 937,624
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Issue date Oct 19, 1909
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F28 - HEAT EXCHANGE IN GENERAL
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711969
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Patent number 711,969
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Issue date Oct 28, 1902
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F28 - HEAT EXCHANGE IN GENERAL
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677969
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Patent number 677,969
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Issue date Jul 9, 1901
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F28 - HEAT EXCHANGE IN GENERAL
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562957
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Patent number 562,957
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Issue date Jun 30, 1896
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F28 - HEAT EXCHANGE IN GENERAL
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560969
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Patent number 560,969
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Issue date May 26, 1896
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F28 - HEAT EXCHANGE IN GENERAL
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538635
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Patent number 538,635
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Issue date Apr 30, 1895
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F28 - HEAT EXCHANGE IN GENERAL
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528058
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Patent number 528,058
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Issue date Oct 23, 1894
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F28 - HEAT EXCHANGE IN GENERAL
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413806
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Patent number 413,806
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Issue date Oct 29, 1889
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F28 - HEAT EXCHANGE IN GENERAL
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402153
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Patent number 402,153
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Issue date Apr 30, 1889
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F28 - HEAT EXCHANGE IN GENERAL
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267362
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Patent number 267,362
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Issue date Nov 14, 1882
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F28 - HEAT EXCHANGE IN GENERAL
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261379
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Patent number 261,379
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Issue date Jul 18, 1882
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F28 - HEAT EXCHANGE IN GENERAL
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246773
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Patent number 246,773
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Issue date Sep 6, 1881
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F28 - HEAT EXCHANGE IN GENERAL
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232429
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Patent number 232,429
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Issue date Sep 21, 1880
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F28 - HEAT EXCHANGE IN GENERAL
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77179
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Patent number 77,179
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Issue date Apr 28, 1868
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F24 - HEATING RANGES VENTILATING
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46765
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Patent number 46,765
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Issue date Mar 14, 1865
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F28 - HEAT EXCHANGE IN GENERAL
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45425
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Patent number 45,425
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Issue date Dec 13, 1864
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F28 - HEAT EXCHANGE IN GENERAL