| All Patents in class 408/174 |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 20,168 | May 04, 1858 | R. Nuttall | Cutting Screws | taps and dies |
| 28,747 | Jun. 19, 1860 | E.P. Gleason | Die plate for cutting screws | taps and dies |
| 77,530 | May 05, 1868 | J.H. Richardson | Cutting Screws | screwcutting lathes |
| 111,248 | Jan. 24, 1871 | S.W. Putnam, Jr. | Improvement in machines for cutting screw-threads on bolts | metal threading machines |
| 113,740 | Apr. 18, 1871 | J.M. Carpenter | Improved Machine for Cutting Screws | metal threading machines |
| 136,736 | Mar. 11, 1873 | J.K. Kacerovsky | Expanding Boring Tools | boring heads |
| 166,716 | Aug. 17, 1875 | R.C. Nugent | Screw Cutting Dies | taps and dies |
| 175,579 | Apr. 04, 1876 | E.A. Stimson | Screw Cutting Dies | taps and dies |
| 274,281 | Mar. 20, 1883 | I. Culver | Screw Cutting Head | taps and dies |
| 289,275 | Nov. 27, 1883 | O.J. Kosiol | Stock for Cutting Threads | tap and die holders |
| 293,868 | Feb. 19, 1884 | W. Hargrave | Screw Cutting Implement | tap and die holders |
| 443,500 | Dec. 30, 1890 | L.B. Curtis, R.P. Curtis | Pipe Threading Machine | pipe threading machines |
| 479,377 | Jul. 19, 1892 | A.L. Newton | Mortising auger | mortising machines |
| 529,169 | Nov. 13, 1894 | J. Hartness | Screw Cutting Die | tap and die holders |
| 541,209 | Jun. 18, 1895 | G.S. Long | Screw-cutting tool | taps and dies |
