| Patents Granted on 1871-04-?? |
Patents 1 -
15
of 91
      |
| Number | Date | Patentee | Title | Type |
| CA-909 | Apr. 04, 1871 | W.H. Barwick | Barwick Improved Wrench | pliers type wrenches |
| 113,261 | Apr. 04, 1871 | A. Clarke | Pincers | pliers |
| 113,262 | Apr. 04, 1871 | H. Climer, C.E. McBeth | Improvement in cutter-heads for planing-machines | cutterheads |
| 113,268 | Apr. 04, 1871 | H.A. Crossley | Improved wheel for stave-jointing machines | cooper |
| 113,344 | Apr. 04, 1871 | W.H. Rand | Drill-stock | watchmaker |
| 113,375 | Apr. 04, 1871 | W.W. Waterbury, J.M. Waterbury | Improvement in sawing-machines | tablesaws |
| 113,412 | Apr. 04, 1871 | G. Finnegan | Improvement in saw-mills | bandsaws |
| 113,439 | Apr. 04, 1871 | E.C. Merrill | Improvement in the manufacture of emery-wheels and artificial stone | grinding wheels |
| 113,448 | Apr. 04, 1871 | M.F. Potts | Sad Iron | pressing irons |
| 113,464 | Apr. 04, 1871 | A.L. Sweet | Cutter-head for making wooden rods | cutterheads |
| CA-917 | Apr. 11, 1871 | T. Beaudry | Joint for joining the ends of machine belts | industrial machine mechanisms |
| CA-919 | Apr. 11, 1871 | A. Ross, M.H. Utley | Improvements on electro-magnetic motors | electric motors |
| RE4,329 | Apr. 11, 1871 | J.T. Case | Water Wheel | water wheels |
| RE4,330 | Apr. 11, 1871 | J.T. Case | Water Wheel | water wheels |
| RE4,333 | Apr. 11, 1871 | W.W. Draper | Improvement in tool-holders | tool handles |
