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| Patents for J. Grant Culverwell | |||||
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| Number | Date | Patentee | Title | Type | |
| 606,395 | Jun. 28, 1898 | E.H. Shaw | Combination-tool | combination tools | |
| 612,454 | Oct. 18, 1898 | M. Blackwell | Pipe Wrench | pipe wrenches | |
| 613,613 | Nov. 01, 1898 | D. Warner | Axle Nut Wrench | axle nut wrenches that lock nut to wheel hub | |
| 630,825 | Aug. 08, 1899 | D.M. Campbell | Winding Tool For Bale Fastenings | ratchet wrenches | |