| All Patents in class 470/74 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 203,946 | May 21, 1878 | C.D. Rodgers | Metal Screw Machine | screw machines |
| 244,679 | Jul. 19, 1881 | H.M. Smith | Machine for Threading Thrasher Cylinder Teeth | metal threading machines |
| 574,162 | Dec. 29, 1896 | G.G. Prentice | Multiple Screw Machine | screw machines |
| 642,309 | Jan. 30, 1900 | F.A. Errington | Automatically Opening or Closing Die for Cutting Screw Threads, &c. | taps and dies |
| 877,925 | Feb. 04, 1908 | J. Hartness | Taper Turning Tool | lathe tools |
| 1,084,118 | Jan. 13, 1914 | W.W. Vosper | Pipe Threading and Cutting Apparatus. | pipe threading machines |
| 1,114,629 | Oct. 20, 1914 | W. Murchey | Device for cutting screw-threads | tapping heads and chucks |
| 2,746,066 | May 22, 1956 | P.A. White, R.R. Finn | Collapsible Threading Die for Selectively Cutting Straight or Taper Threads | taps and dies |
