| All Patents in class 408/162 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
 | 120,266 | Oct. 24, 1871 | J.J. Grant | Improvement in Dies for Cutting Screw Threads |
| | 161,311 | Mar. 23, 1875 | F.E. Wells | Screw-Threading Die |
 | 186,890 | Jan. 30, 1877 | A.J. Smart | Improvement in screw-cutting dies |
 | 204,028 | May 21, 1878 | F.N. Gardner, N. Sawyer, J.J. Grant | Improvement in screw-cutting dies |
 | 252,903 | Jan. 31, 1882 | A. Saunders | Reamer |
| | 265,535 | Oct. 03, 1882 | R.C. Nugent | Boring Head for Boring Cylinders |
 | 303,060 | Aug. 05, 1884 | A.J. Smart | Screw Cutting Die |
 | 306,783 | Oct. 21, 1884 | A.J. Smart | Screw Cutting Die |
| | 473,582 | Apr. 26, 1892 | H.B. Keiper | Screw-cutting plate |
 | 530,846 | Dec. 11, 1894 | H.B. Keiper | Screw-cutting plate |
