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| Patents for J. F. McKenna | |||||
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| Number | Date | Patentee | Title | Type | |
| 722,695 | Mar. 17, 1903 | C.B. Gracey | Ratchet-Wrench | ratchet wrenches | |
| 1,000,835 | Aug. 15, 1911 | A.L. Smith, S.A. Minnick | Calipers | calipers | |