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| Patents Granted on 1880-01-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE9,052 | Jan. 20, 1880 | B. Yoch | Portable and Road Engine | steam traction engines | |
| 223,709 | Jan. 20, 1880 | M.B. Cornell | Framing Squares | carpenter squares | |
| 223,727 | Jan. 20, 1880 | S.D. Halley | Combined Square, Protractor, &c. | miter squares | |
| 223,736 | Jan. 20, 1880 | J. Houck | Feed mechanism for lathes | wood lathes | |