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| All Patents in class 72/234 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,439,341 | Dec. 19, 1922 | H.H. Talbot | Rolling-mill drive | steel maker | |
| 1,514,405 | Nov. 04, 1924 | H.H. Talbot | Variable-speed rolling-mill drive | steel maker | |
| 2,363,585 | Nov. 28, 1944 | C.E. Grosser, H.A. Bondeson | Rolling mill | rolling mills | |
| 2,430,368 | Nov. 04, 1947 | J.J. Reardon | Apparatus and Method for Drawing and Broaching Socket Wrenches | making wrenches | |
| 2,612,195 | Sep. 30, 1952 | P.A. Rahaim | Process of making improved dowel stock and dowel pins | ||