| All Patents in class 408/142 |
Patents 1 -
15
of 24
      |
| Number | Date | Patentee | Title | Type |
| 466,946 | Jan. 12, 1892 | D.J. Hurley | Tapping Device | tap and die holders |
| 529,169 | Nov. 13, 1894 | J. Hartness | Screw Cutting Die | tap and die holders |
| 564,700 | Jul. 28, 1896 | H. Kupsch | Open Die Head | tap and die holders |
| 631,080 | Aug. 15, 1899 | A.C. Kraft | Turret Lathe Tool Holder | lathe tool holders and tool posts |
| 635,324 | Oct. 24, 1899 | R. Kilburn | Tap for Forming Screw Threads | taps and dies |
| 649,733 | May 15, 1900 | J.P. Lavigne | Die Head | |
| 687,804 | Dec. 03, 1901 | H. Wharton | Die or Tool Holder | taps and dies |
| 726,674 | Apr. 28, 1903 | C.L. Goodrich | Tool Holder for Screw Machines | lathe tool holders and tool posts |
| 909,748 | Jan. 12, 1909 | I.W. Sprink, F.L. Brown | Automatic Die Head | tap and die holders |
| 1,132,536 | Mar. 16, 1915 | A.J. Prance | Screw-cutting tap | tapping heads and chucks |
| 1,254,933 | Jan. 29, 1918 | A. Abbey, E. Peuch | Drilling, Screw Cutting , and Other Similar Machine | drill press chucks |
| 1,255,223 | Feb. 05, 1918 | A.J. Prance | Screw-cutting die | tapping heads and chucks |
| 1,345,710 | Jul. 06, 1920 | A.A. Shafer | Collapsible Tap | taps and dies |
| 1,345,744 | Jul. 06, 1920 | R.A. Boehm | Collapsible Tap | taps and dies |
| 1,415,013 | May 09, 1922 | R.A. Boehm | Collapsible Tap | taps and dies |
