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| Patents for J. H. Fravel | |||||
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| Number | Date | Patentee | Title | Type | |
| 455,225 | Jun. 30, 1891 | W.F. Mercer | Wrench | quick adjust wrenches | |
| 514,721 | Feb. 13, 1894 | C.L. Mahnicke | Chain Pipe Wrench | chain and strap wrenches | |