| Patents for John J. Grant |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 120,266 | Oct. 24, 1871 | J.J. Grant | Improvement in Dies for Cutting Screw Threads | tap wrenches and die stocks |
| 129,472 | Jul. 16, 1872 | J.J. Grant | Tap Wrench | tap wrenches and die stocks |
| 129,548 | Jul. 16, 1872 | J.J. Grant | Improvement in devices for grinding rotary cutters | cutter grinding |
| 136,153 | Feb. 25, 1873 | J.J. Grant | Improvement in die-stocks for cutting screws | tap wrenches and die stocks |
| 167,165 | Aug. 31, 1875 | J.J. Grant | Improvement in die-stocks | tap wrenches and die stocks |
| 170,949 | Dec. 14, 1875 | J.J. Grant | Improvement in screw-cutting die holders | tap wrenches and die stocks |
| 172,854 | Feb. 01, 1876 | J.J. Grant | Improvement in Tap-Wrenches | tap wrenches and die stocks |
| 173,780 | Feb. 22, 1876 | J.J. Grant | Improvement in screw-cutting dies | taps and dies |
| 204,028 | May 21, 1878 | F.N. Gardner, N. Sawyer, J.J. Grant | Improvement in screw-cutting dies | taps and dies |
| 684,508 | Oct. 15, 1901 | J.J. Grant | Tool-rest adjustment | metal lathes |
| 684,634 | Oct. 15, 1901 | J.J. Grant | Worm-wheel-cutting machine | gear making machines |
| 684,635 | Oct. 15, 1901 | J.J. Grant | Lathe | turret lathes |
| 907,142 | Dec. 22, 1908 | J.J. Grant, J.F. Fieg | Change-speed gear mechanism | automatic lathes |
| 926,736 | Jul. 06, 1909 | J.J. Grant | Multiple-spindle lathe | automatic lathes |
| 926,737 | Jul. 06, 1909 | J.J. Grant, J.F. Fieg | Automatic lathe | automatic lathes |
