| All Patents in class 408/162 |
Patents 1 -
15
of 16
      |
| 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 |
| 161,311 | Mar. 23, 1875 | F.E. Wells | Screw-Threading Die | taps and dies |
| 186,890 | Jan. 30, 1877 | A.J. Smart | Improvement in screw-cutting dies | taps and dies |
| 204,028 | May 21, 1878 | N. Sawyer, J.J. Grant, F.N. Gardner | Improvement in screw-cutting dies | taps and dies |
| 252,903 | Jan. 31, 1882 | A. Saunders | Reamer | plumber |
| 265,535 | Oct. 03, 1882 | R.C. Nugent | Boring Head for Boring Cylinders | portable turning tools |
| 303,060 | Aug. 05, 1884 | A.J. Smart | Screw Cutting Die | taps and dies |
| 306,783 | Oct. 21, 1884 | A.J. Smart | Screw Cutting Die | taps and dies |
| 473,582 | Apr. 26, 1892 | H.B. Keiper | Screw-cutting plate | |
| 530,846 | Dec. 11, 1894 | H.B. Keiper | Screw-cutting plate | |
| 663,455 | Dec. 11, 1900 | K.O. Muehlberg | Cutter Tool | reamers |
| 1,061,129 | May 06, 1913 | C.C. Russell | Screw-plate | tap and die holders |
| 1,074,466 | Sep. 30, 1913 | C.C. Russell | Screw-plate | tap and die holders |
| 1,130,542 | Mar. 02, 1915 | W. Russell | Screw-cutting die | taps and dies |
| 1,341,565 | May 25, 1920 | H. Krepps | Boring Head | boring heads |
