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| Patents for John McKenna | |||||
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| Number | Date | Patentee | Title | Type | |
| 48,644 | Jul. 11, 1865 | G. Beard | Improvement in Measures for the Human Body | special purpose gauges | |
| 68,423 | Sep. 03, 1867 | J.W. Ells | Improved Method of Making Axe-Blanks | making axes | |
| 472,712 | Apr. 12, 1892 | J. McKenna | Bed for metal-working machines | metalworking machines | |