| All Patents in class 470/176 |
Patents 1 -
15
of 33
      |
| Number | Date | Patentee | Title | Type |
| 143,273 | Sep. 30, 1873 | W.D. Chase | Machine for Cutting and Threading Pipes, &c. | pipe threading machines |
| 244,679 | Jul. 19, 1881 | H.M. Smith | Machine for Threading Thrasher Cylinder Teeth | metal threading machines |
| 253,266 | Feb. 07, 1882 | S. Darling | Screw Nut | nut or bolt making machines |
| 270,407 | Jan. 09, 1883 | W.D. Forbes | Screw-threading machine | pipe threading machines |
| 270,408 | Jan. 09, 1883 | W.D. Forbes | Screw-threading machine | pipe threading machines |
| 407,413 | Jul. 23, 1889 | D. Rosser, T. McFassen | Pipe Thread Cutting Machine | pipe threading machines |
| 410,484 | Sep. 03, 1889 | J.P. Berkholz | Machine for Cutting Screw Blanks and Screws | cutting-off and centering machines |
| 424,527 | Apr. 01, 1890 | S.L. Worsley | Metal Screw Machine | screw machines |
| 443,500 | Dec. 30, 1890 | L.B. Curtis, R.P. Curtis | Pipe Threading Machine | pipe threading machines |
| 686,577 | Nov. 12, 1901 | B. Borden | Pipe Threading Machine | pipe threading machines |
| 872,728 | Dec. 03, 1907 | J. Hartness | Machine for Cutting Screw Threads | metal threading machines |
| 882,290 | Mar. 17, 1908 | J. Bowen | Machine for Cutting Screws, &c. | screwcutting lathes |
| 893,431 | Jul. 14, 1908 | J. Bowen | Machine for Cuting Screw, & c. | screwcutting lathes |
| 922,120 | May 18, 1909 | C.M. Foster | Pipe-Threading Machine. | pipe threading machines |
| 962,024 | Jun. 21, 1910 | L.F. Hart | Screw Cutting Device | pipe threading machines |
