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| All Patents in class 72/355.6 | |||||
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| Number | Date | Patentee | Title | Type | |
| 575,790 | Jan. 26, 1897 | C.D. Rice | Forging Machine | forging apparatus and accessories | |
| 659,522 | Oct. 09, 1900 | Z.T. Furbish | Apparatus for Making Ribbed Sleeves or Wheels | ||
| 2,417,569 | Mar. 18, 1947 | H.T. Rice | Method and Apparatus for Press Forging Wrench Sockets and the Like | making wrenches | |