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| Patents Granted on 1861-01-29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 31,217 | Jan. 29, 1861 | G.W. Armstrong | Water Wheel | water wheels | |
| 31,232 | Jan. 29, 1861 | A.F. French | Machine for sawing shingles from the block | shingle machines | |
| 31,239 | Jan. 29, 1861 | J. Harris | Water Wheel | water wheels | |
| 31,257 | Jan. 29, 1861 | N.F. Newell | Centering Bars of Iron | metal lathe accessories and attachments | |
| 31,277 | Jan. 29, 1861 | P.H. Woolsey | Shingle-machine | shingle machines | |