| All Patents in class 470/176 |
Patents 1 -
10
of 35
      |
| Picture | Number | Date | Patentee | Title |
 | 143,273 | Sep. 30, 1873 | W.D. Chase | Machine for Cutting and Threading Pipes, &c. |
| | 244,679 | Jul. 19, 1881 | H.M. Smith | Machine for Threading Thrasher Cylinder Teeth |
 | 253,266 | Feb. 07, 1882 | S. Darling | Screw Nut |
 | 270,407 | Jan. 09, 1883 | W.D. Forbes | Screw-threading machine |
 | 270,408 | Jan. 09, 1883 | W.D. Forbes | Screw-threading machine |
| | 407,413 | Jul. 23, 1889 | D. Rosser, T. McFassen | Pipe Thread Cutting Machine |
| | 410,484 | Sep. 03, 1889 | J.P. Berkholz | Machine for Cutting Screw Blanks and Screws |
 | 424,527 | Apr. 01, 1890 | S.L. Worsley | Metal Screw Machine |
| | 443,500 | Dec. 30, 1890 | L.B. Curtis, R.P. Curtis | Pipe Threading Machine |
| | 686,577 | Nov. 12, 1901 | B. Borden | Pipe Threading Machine |
