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| Patents for Harry W. Hahn | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-57,203 | Aug. 25, 1897 | G. McEachren | Wrench | ratchet wrenches | |
| 599,252 | Feb. 15, 1898 | W.M. Powell, Jr. | Pipe Tongs | chain and strap wrenches | |
| 600,767 | Mar. 15, 1898 | J. Brandall | Rabbet Plane Fence | plane fences | |
| 608,120 | Jul. 26, 1898 | W. Heffner | Nut Wrench | screw adjust wrenches | |