| All Patents in class 408/163 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 421,773 | Feb. 18, 1890 | T.L. Smith | Screw Cutting Die | taps and dies |
| 473,582 | Apr. 26, 1892 | H.B. Keiper | Screw-cutting plate | |
| 610,158 | Aug. 30, 1898 | F.G. Echols | Tool for Cutting Screw Threads | tap and die holders |
| 863,515 | Aug. 13, 1907 | J.O. Dixon | Screw Threading Machine | metal threading machines |
| 871,451 | Nov. 19, 1907 | A.J. Smart | Screw-cutting die and holder therefor | tap wrenches and die stocks |
| 890,848 | Jun. 16, 1908 | E.S. Mummert, J.O. Dixon | Screw Threading Machine | metal threading machines |
| 995,413 | Jun. 13, 1911 | H.F. Mussler | Reamer | reamers |
| 1,046,739 | Dec. 10, 1912 | E.E. Davis | Reaming-tool | reamers |
| 1,419,448 | Jun. 13, 1922 | C.E. Davis | Boring Head | boring heads |
| 1,563,108 | Nov. 24, 1925 | A.J. Prance | Thread-cutting die | tapping heads and chucks |
| 1,696,195 | Dec. 25, 1928 | A.F. Froussard | Cutter Head | boring heads |
| 2,189,604 | Feb. 06, 1940 | F.P. Healy | Boring bar guiding mechanism | boring bars |
| 2,393,600 | Jan. 29, 1946 | R.W. Ecoff | Thread cutting machine | metal threading machines |
| 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 |
| 3,222,956 | Dec. 14, 1965 | L.A. Attermeyer, L.A. Dever | Machine Tool Spindle Mechanism | vertical boring mills |
