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All Patents in class 110/199 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 174,139 | Feb. 29, 1876 | W.J. Liddell | Improvement in furnaces for portable boilers | |
660,181 | Oct. 23, 1900 | H.C. Clay | Straw Burning Furnace |