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| Patents for Frederick W. Stewart | |||||
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| Number | Date | Patentee | Title | Type | |
| 617,369 | Jan. 10, 1899 | G.R. Van Schoick, F.W. Stewart | Wrench | quick adjust wrenches | |
| 630,421 | Aug. 08, 1899 | F.W. Stewart | Wrench | quick adjust wrenches | |
| CA-65,272 | Dec. 09, 1899 | F.W. Stewart | Wrench | quick adjust wrenches | |