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| Patents for Chas. F. Schwelz | |||||
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| Number | Date | Patentee | Title | Type | |
| 509,408 | Nov. 28, 1893 | R.T. Torkelson | Pipe Wrench | pipe wrenches | |
| 564,816 | Jul. 28, 1896 | J.V. Chamberlin, R. Aldrich | Wrench | quick adjust wrenches | |