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| All Patents in class 81/DIG.7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 634,175 | Oct. 03, 1899 | R.L. Levin | Wrench | spoke nipple wrenches | |
| 1,335,092 | Mar. 30, 1920 | L.H. Conley | Spoke Nipple Wrench For Wire Wheels | spoke nipple wrenches | |
| 1,393,920 | Oct. 18, 1921 | W.P. Strickland | Nipple Grip | spoke nipple wrenches | |
| 5,894,767 | Apr. 20, 1999 | W.J. Woodruff, M.J. Hasenberg, G.A. Wridt | Spoke Wrench | ||