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| All Patents in class 432/159 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 8,593X | Jan. 16, 1835 | M.B. Bulkley | Heating furnaces with anthracite coal | ||
| 8,851X | May 29, 1835 | J. Owings | Furnace for burning lime and smelting ore | ||
| 4,875,854 | Oct. 24, 1989 | L.M. Emery | Miniature Forge | ||