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| All Patents in class 72/235 | |||||
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| Number | Date | Patentee | Title | Type | |
| 64,364 | Apr. 30, 1867 | T.C. Rice | Improved Apparatus for Heading Wrench-Bars | wrench jaw components | |
| 69,085 | Sep. 24, 1867 | D. Eynon | Improvement in rolling apparatus for rolling chairs for railroads | track and switches | |
| 2,336,621 | Dec. 14, 1943 | R.G. Tourneau | Continuous bar mill | steel maker | |