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| All Patents in class 81/DIG7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 613,283 | Nov. 01, 1898 | W.F. Krahe | Spoke Grip | spoke nipple wrenches | |
| 648,135 | Apr. 24, 1900 | E.E. Taggart | Nipple-Grip For Bicycle-Wheels | spoke nipple wrenches | |