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| All Patents in class 110/309 | |||||
| Number | Date | Patentee | Title | Type | |
| 95,849 | Oct. 12, 1869 | B.F. Sturtevant | Hot Air Furnace | industrial furnaces | |
| 713,012 | Nov. 04, 1902 | G.B. Mitchell | Combination Blast Furnace | forges | |
| 782,875 | Feb. 21, 1905 | H. Price | Forge | forges | |