| All Patents in class 470/188 |
Patents 1 -
15
of 39
      |
| Number | Date | Patentee | Title | Type |
| 230,825 | Aug. 03, 1880 | I.S. Schuyler | Machine for Cutting Screw Threads | metal threading machines |
| 312,700 | Feb. 24, 1885 | M. Blakey | Machine for Making Tapered Threaded Sockets | pipe threading machines |
| 535,486 | Mar. 12, 1895 | Z.B. Coes | Taper Turning Tool for Lathes | lathe tools |
| 763,816 | Jun. 28, 1904 | W. Vosper | Die for cutting taper threads | plumber |
| 841,396 | Jan. 15, 1907 | F.W. Hoefer | Machine for Threading Pipes | pipe threading machines |
| 925,181 | Jun. 15, 1909 | L.F. Hart | Screw Cutting Device | tap and die holders |
| 939,648 | Nov. 09, 1909 | F.E. Wells, F.W. Wells | Die-stock | tap and die holders |
| 939,735 | Nov. 09, 1909 | W. Murchey | Thread-cutting tool | tapping heads and chucks |
| 962,024 | Jun. 21, 1910 | L.F. Hart | Screw Cutting Device | pipe threading machines |
| 962,184 | Jun. 21, 1910 | F.E. Wells | Die-stock | tap and die holders |
| 965,320 | Jul. 26, 1910 | H.W. Oster | Die-stock | taps and dies |
| 965,402 | Jul. 26, 1910 | H.W. Oster | Threading-machine | pipe threading machines |
| 965,403 | Jul. 26, 1910 | H.W. Oster | Die-stock | taps and dies |
| 971,941 | Oct. 04, 1910 | W.W. Vosper | Pipe-Threading Machine. | pipe threading machines |
| 977,539 | Dec. 06, 1910 | H.W. Oster | Die-stock for cutting tapered threads | taps and dies |
