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| All Patents in class 122/7R | |||||
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| Picture | Number | Date | Patentee | Title | |
| 7,586X | May 20, 1833 | P.J. Clute | Generating steam for forging malleable iron | ||
| 33,497 | Oct. 15, 1861 | P. Shaw | Air Engine | ||
| 931,951 | Aug. 24, 1909 | N.D. Munn | Steam Generating Blacksmith's Forge | ||
 | 981,100 | Jan. 10, 1911 | C.M. Minton | Saw-Handle | |