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Fire tube
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Patent number 11,371,694
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Issue date Jun 28, 2022
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TRINITY ENDEAVORS, LLC
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Ty Mitchell
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F22 - STEAM GENERATION
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Gas fired humidifier
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Patent number 6,446,877
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Issue date Sep 10, 2002
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Armstrong International, Incorporated
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Michael H. Gaines
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F24 - HEATING RANGES VENTILATING
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938035
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Patent number 938,035
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Issue date Oct 26, 1909
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F22 - STEAM GENERATION
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852481
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Patent number 852,481
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Issue date May 7, 1907
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F22 - STEAM GENERATION
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812908
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Patent number 812,908
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Issue date Feb 20, 1906
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F22 - STEAM GENERATION
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799116
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Patent number 799,116
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Issue date Sep 12, 1905
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F22 - STEAM GENERATION
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797227
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Patent number 797,227
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Issue date Aug 15, 1905
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F22 - STEAM GENERATION
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707203
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Patent number 707,203
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Issue date Aug 19, 1902
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F22 - STEAM GENERATION
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660898
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Patent number 660,898
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Issue date Oct 30, 1900
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F22 - STEAM GENERATION
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654060
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Patent number 654,060
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Issue date Jul 17, 1900
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F22 - STEAM GENERATION
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632720
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Patent number 632,720
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Issue date Sep 12, 1899
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F22 - STEAM GENERATION
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596486
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Patent number 596,486
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Issue date Jan 4, 1898
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F22 - STEAM GENERATION
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533786
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Patent number 533,786
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Issue date Feb 5, 1895
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F22 - STEAM GENERATION
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485183
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Patent number 485,183
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Issue date Nov 1, 1892
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F22 - STEAM GENERATION
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351201
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Patent number 351,201
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Issue date Oct 19, 1886
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F22 - STEAM GENERATION
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344686
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Patent number 344,686
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Issue date Jun 29, 1886
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F22 - STEAM GENERATION
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324101
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Patent number 324,101
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Issue date Aug 11, 1885
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F22 - STEAM GENERATION
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322701
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Patent number 322,701
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Issue date Jul 21, 1885
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F22 - STEAM GENERATION
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309656
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Patent number 309,656
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Issue date Dec 23, 1884
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F22 - STEAM GENERATION
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283672
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Patent number 283,672
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Issue date Aug 21, 1883
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F22 - STEAM GENERATION
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220060
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Patent number 220,060
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Issue date Sep 30, 1879
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F22 - STEAM GENERATION
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30957
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Patent number 30,957
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Issue date Dec 18, 1860
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F22 - STEAM GENERATION
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30258
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Patent number 30,258
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Issue date Oct 2, 1860
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F22 - STEAM GENERATION
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6076
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Patent number 6,076
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Issue date Jan 30, 1849
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F22 - STEAM GENERATION