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| Patents for Robt. E. Crump | |||||
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| Number | Date | Patentee | Title | Type | |
| 594,563 | Nov. 30, 1897 | R.A. Ryrie | Pipe Wrench | chain and strap wrenches | |
| CA-65,166 | Dec. 01, 1899 | W.H. Preston | Wrench | quick adjust wrenches | |