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| All Patents of Type: steel making furnaces | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,507X | Aug. 02, 1826 | C. Foss | Application of steam to the blast of furnaces | steel making furnaces | |
| 7,078X | May 22, 1832 | T. Gregg | Blast furnace for smelting iron ore | steel making furnaces | |
| 8,851X | May 29, 1835 | J. Owings | Furnace for burning lime and smelting ore | steel making furnaces | |
| 9,698X | Jun. 02, 1836 | B. Kugler | Blast furnace | steel making furnaces | |
| 28,214 | May 08, 1860 | R.R. Taylor | Puddling furnace | steel making furnaces | |