| All Patents in class 470/185 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 21,961 | Nov. 02, 1858 | W.O. Hickok | Die for Cutting Wooden Screws | drill accessories |
| 125,980 | Apr. 23, 1872 | S. North | Improvement in Screw Cutting Devices | wood threading machines |
| 212,212 | Feb. 11, 1879 | F.F. Gokey | Device for Cutting and Screw-Threading Wagon-Axles | portable turning tools |
| 300,604 | Jun. 17, 1884 | W.C. Hartmann | Die Stock | tap wrenches and die stocks |
| 422,024 | Feb. 25, 1890 | A.B. Landis | Screw-cutting head | screw machines |
| 575,148 | Jan. 12, 1897 | J.L. Chapman | Chaser Die | thread chasers |
| 614,949 | Nov. 29, 1898 | J. Hartness | Screw Cutting Die | taps and dies |
| 740,016 | Sep. 29, 1903 | L.A. Howe | Self-opening die | |
| 786,353 | Apr. 04, 1905 | C.R. Gabriel | Screw Machine | screw machines |
| 871,451 | Nov. 19, 1907 | A.J. Smart | Screw-cutting die and holder therefor | tap wrenches and die stocks |
| 1,395,252 | Nov. 01, 1921 | E.E. Beck | Thread Cutting Die | taps and dies |
| 1,545,749 | Jul. 14, 1925 | R.E. Flanders | Method of Making Chasers | thread chasers |
| 1,635,179 | Jul. 12, 1927 | R.E. Flanders | Threading Tool | taps and dies |
| 1,923,423 | Aug. 22, 1933 | R.S. Crosby, F.E. Newton | Machine for cutting screw threads | screw machines |
| 1,978,427 | Oct. 30, 1934 | W.J. Hogg | Combined Circular Chaser and Turning Tool | tap and die holders |
