| All Patents in class 408/176 |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 72,747 | Dec. 31, 1867 | D. McArthur | Diestock for Cutting Screws | tap wrenches and die stocks |
| 123,951 | Feb. 20, 1872 | L.W. Stockwell | Improvement in Screw Cutting Machines | screw machines |
| 250,459 | Dec. 06, 1881 | L.W. Stockwell | Machine for Threading Bolts | metal threading machines |
| 259,433 | Jun. 13, 1882 | L.W. Stockwell | Screw Threading Machine | metal threading machines |
| 309,374 | Dec. 16, 1884 | M.C. Bignall, G.W. Whitman | Pipe cutting and threading machine | pipe cutting machines |
| 316,330 | Apr. 21, 1885 | T.M. Burke | Adjustable Screw Cutting Die Stock | tap and die holders |
| 406,857 | Jul. 09, 1889 | A. Saunders | Screw Cutting Die | pipe threading machines |
| 417,659 | Dec. 17, 1889 | J.S. Bancroft | Means for Operating the Die Heads of Bolt Threading Machines | metal threading machines |
| 565,746 | Aug. 11, 1896 | J. Hartness | Screw Cutting Die | taps and dies |
| 614,949 | Nov. 29, 1898 | J. Hartness | Screw Cutting Die | taps and dies |
| 962,184 | Jun. 21, 1910 | F.E. Wells | Die-stock | tap and die holders |
| 1,289,721 | Dec. 31, 1918 | H.L. Fisher | Cutter-head | pipe threading machines |
| 1,327,008 | Jan. 06, 1920 | G.A. Anderson | Cutter-head | pipe threading machines |
| 1,434,995 | Nov. 07, 1922 | H. Francis | Cutting or Boring Tool or Boring Head | boring heads |
| 1,506,484 | Aug. 26, 1924 | L.F. Hart | Diestock | taps and dies |
