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| Patents Granted on 1861-04-02 | |||||
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| Number | Date | Patentee | Title | Type | |
| 31,877 | Apr. 02, 1861 | S.S. Dice | Crosscut-sawing machine | drag saws | |
| 31,883 | Apr. 02, 1861 | S.P. Gilbert | Hollow Auger | hollow bits | |
| 31,927 | Apr. 02, 1861 | L. Dodge | Shear for the manufacture of axes | tool making machines | |
| 31,934 | Apr. 02, 1861 | J. Nevison | Stave-machine | barrel making machines | |
| 31,937 | Apr. 02, 1861 | J. Kiefer, G. Zchech | Shingle-machine | shingle machines | |