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| Patents for F. J. Benjamin | |||||
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| Number | Date | Patentee | Title | Type | |
| 468,241 | Feb. 02, 1892 | P.G. Douglas | Wrench | ratchet wrenches | |
| 497,978 | May 23, 1893 | E.B. Hayes | Door-machine | specialty woodworking machines | |