| Patents Granted on 1871-04-18 |
Patents 1 -
15
of 25
      |
| Number | Date | Patentee | Title | Type |
| CA-935 | Apr. 18, 1871 | J.E. Waterous | Machine for regulating the pressure of water in street mains and water pipes | |
| 113,725 | Apr. 18, 1871 | W. Baxter, Jr. | Steam Pump | steam pumps |
| 113,731 | Apr. 18, 1871 | M.S. Bourland | Improvement in tenoning-machines | tenoning machines |
| 113,740 | Apr. 18, 1871 | J.M. Carpenter | Improved Machine for Cutting Screws | metal threading machines |
| 113,743 | Apr. 18, 1871 | A.G. Coes | Improvement in the Modes of Forming the Heads of Wrench-Bars | wrench jaw components |
| 113,746 | Apr. 18, 1871 | J. Decker | Improvement in shingle-machines | shingle machines |
| 113,750 | Apr. 18, 1871 | W.W. Dingee | Horse Power | animal powered apparatus |
| 113,767 | Apr. 18, 1871 | J.W. Hazen | Road Engine | steam traction engines |
| 113,769 | Apr. 18, 1871 | R.M. Hoe | Improvement in printing-presses | |
| 113,776 | Apr. 18, 1871 | G.B. Kirkham | Treadle | human powered apparatus |
| 113,795 | Apr. 18, 1871 | J.J. Ralya | Improvement in machines for turning barrel-heads | barrel making machines |
| 113,796 | Apr. 18, 1871 | A.B. Reeves | Improvement in Cant Hooks | lumberjack |
| 113,798 | Apr. 18, 1871 | J.F. Rider, E.P. Brownell | Machine for boring spools | drilling and boring |
| 113,800 | Apr. 18, 1871 | N. Russell | Planing Tool | metal planer tools |
| 113,815 | Apr. 18, 1871 | G.C. Taft | Improvement in drilling-machines | horizontal drilling machines |
