| All Patents in class 408/182 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 28,279 | May 15, 1860 | Z.L. Jacobs | Screw Plate | tap and die holders |
| 52,294 | Jan. 30, 1866 | T. Kennedy | Improved Screw-Cutting Chuck | tap and die holders |
| 120,266 | Oct. 24, 1871 | J.J. Grant | Improvement in Dies for Cutting Screw Threads | tap wrenches and die stocks |
| 195,713 | Oct. 02, 1877 | M.C. Johnson | Screw-Cutting Dies | tap and die holders |
| 306,783 | Oct. 21, 1884 | A.J. Smart | Screw Cutting Die | taps and dies |
| 320,693 | Jun. 23, 1885 | G.L. Reece | Screw-plate | taps and dies |
| 350,366 | Oct. 05, 1886 | G. Holstein | Die for Cutting Screws | taps and dies |
| 425,655 | Apr. 15, 1890 | W.E. Canedy | Screw-cutting die and stock | taps and dies |
| 863,515 | Aug. 13, 1907 | J.O. Dixon | Screw Threading Machine | metal threading machines |
| 1,059,025 | Apr. 15, 1913 | F.S. Bradley | Die-stock and dies | tap wrenches and die stocks |
| 1,061,129 | May 06, 1913 | C.C. Russell | Screw-plate | tap and die holders |
| 1,830,268 | Nov. 03, 1931 | M.J. Foley | Die holder | tap wrenches and die stocks |
| 1,898,132 | Feb. 21, 1933 | W.B. du Mont, O.E. Koehler | Thread cutting die and holding clip therefor | tap wrenches and die stocks |
| 1,943,644 | Jan. 16, 1934 | W.W. Vosper | Tool Carrier | pipe threading machines |
| 4,242,018 | Dec. 30, 1980 | H. Schürfeld | Boring Tool | |
