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-
-
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2141238
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Patent number 2,141,238
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Issue date Dec 27, 1938
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F24 - HEATING RANGES VENTILATING
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2070182
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Patent number 2,070,182
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Issue date Feb 9, 1937
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F22 - STEAM GENERATION
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1864800
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Patent number 1,864,800
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Issue date Jun 28, 1932
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F22 - STEAM GENERATION
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1729567
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Patent number 1,729,567
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Issue date Sep 24, 1929
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F22 - STEAM GENERATION
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1725408
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Patent number 1,725,408
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Issue date Aug 20, 1929
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F22 - STEAM GENERATION
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1157813
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Patent number 1,157,813
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Issue date Oct 26, 1915
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F22 - STEAM GENERATION
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945130
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Patent number 945,130
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Issue date Jan 4, 1910
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F22 - STEAM GENERATION
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823230
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Patent number 823,230
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Issue date Jun 12, 1906
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F22 - STEAM GENERATION
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799196
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Patent number 799,196
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Issue date Sep 12, 1905
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F22 - STEAM GENERATION
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799277
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Patent number 799,277
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Issue date Sep 12, 1905
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F22 - STEAM GENERATION
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717914
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Patent number 717,914
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Issue date Jan 6, 1903
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F22 - STEAM GENERATION
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705682
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Patent number 705,682
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Issue date Jul 29, 1902
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F22 - STEAM GENERATION
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660751
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Patent number 660,751
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Issue date Oct 30, 1900
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F22 - STEAM GENERATION
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594641
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Patent number 594,641
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Issue date Nov 30, 1897
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F22 - STEAM GENERATION
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552362
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Patent number 552,362
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Issue date Dec 31, 1895
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F22 - STEAM GENERATION
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550734
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Patent number 550,734
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Issue date Dec 3, 1895
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F22 - STEAM GENERATION
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519013
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Patent number 519,013
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Issue date May 1, 1894
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F22 - STEAM GENERATION
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501711
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Patent number 501,711
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Issue date Jul 18, 1893
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F22 - STEAM GENERATION
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495868
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Patent number 495,868
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Issue date Apr 18, 1893
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F22 - STEAM GENERATION
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487124
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Patent number 487,124
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Issue date Nov 29, 1892
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F22 - STEAM GENERATION
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431599
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Patent number 431,599
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Issue date Jul 8, 1890
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F22 - STEAM GENERATION
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397651
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Patent number 397,651
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Issue date Feb 12, 1889
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F22 - STEAM GENERATION
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385510
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Patent number 385,510
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Issue date Jul 3, 1888
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F22 - STEAM GENERATION
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358430
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Patent number 358,430
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Issue date Mar 1, 1887
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F22 - STEAM GENERATION
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356914
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Patent number 356,914
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Issue date Feb 1, 1887
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F22 - STEAM GENERATION
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350592
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Patent number 350,592
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Issue date Oct 12, 1886
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F22 - STEAM GENERATION
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341132
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Patent number 341,132
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Issue date May 4, 1886
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F22 - STEAM GENERATION