| Patents Granted on 1861-04-?? |
Patents 1 -
15
of 27
      |
| 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 |
| 31,971 | Apr. 09, 1861 | J.O. Haight | Piston of steam-engines | piston ring and packing |
| 31,987 | Apr. 09, 1861 | R.B. Light | Machinist's Square | squares |
| 31,997 | Apr. 09, 1861 | T. Phillips | Handle for Hammers, &c. | hammer handles |
| NS-68 | Apr. 10, 1861 | W.M. Kay | Threshing and winnowing | threshers and thrashers |
| XC-1,230 | Apr. 10, 1861 | G.M. Cossitt, N. Cossitt, A. Young | This patent was issued out of order. An improved reaper attachment | reapers |
| XC-1,231 | Apr. 10, 1861 | G. Ives | An improved saw horse | work holding |
| RE1,173 | Apr. 16, 1861 | J. Sawyer, S. Sawyer | Hoop machine | cooper |
| 32,041 | Apr. 16, 1861 | S.C. Brown, J. Bain | Tenoning-machine | tenoning machines |
| 32,059 | Apr. 16, 1861 | G. Goulding | Spinning machinery | making textiles |
| 32,072 | Apr. 16, 1861 | C. Luther | Wheelwright's machine | wheelwright |
