| All Patents in class 408/154 |
Patents 1 -
15
of 35
      |
| Number | Date | Patentee | Title | Type |
| 189,889 | Apr. 24, 1877 | J.B. Douglas | Expanding Screw Tap | taps and dies |
| 378,310 | Feb. 21, 1888 | J.T. Hayden | Collapsing Tap | taps and dies |
| 419,174 | Jan. 14, 1890 | J.A. Becher | Revolving Turret Bolt Threading Machine | metal threading machines |
| 427,903 | May 13, 1890 | W. Porteous | Automatic Screw Cutting Die | tap and die holders |
| 453,811 | Jun. 09, 1891 | W. Hutcheson | Screw Cutting Tool | tap and die holders |
| 578,802 | Mar. 16, 1897 | G.E. Witherell | Thread Cutter | tap and die holders |
| 587,715 | Aug. 10, 1897 | F.A. Errington | Automatic Extensible and Collapsible Adjustable Tap | taps and dies |
| 626,385 | Jun. 06, 1899 | A. Johnson | Tap | taps and dies |
| 644,748 | Mar. 06, 1900 | C.A. Svensson | Screw Tap | taps and dies |
| 740,016 | Sep. 29, 1903 | L.A. Howe | Self-opening die | |
| 881,449 | Mar. 10, 1908 | G.A. Smith | Thread Cutting Device | alligator wrenches |
| 966,105 | Aug. 02, 1910 | J.P. Lavigne | Automatic die-head | taps and dies |
| 995,413 | Jun. 13, 1911 | H.F. Mussler | Reamer | reamers |
| 1,038,670 | Sep. 17, 1912 | O.A. Smith | Threading Die | |
| 1,066,878 | Jul. 08, 1913 | S. Blocksom | Adjustable Boring Head | boring heads |
