| All Patents in class 470/69 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 2,453 | Feb. 07, 1842 | J. Walter, L.D. Walter | Machine for Making Screws | screw machines |
| 138,067 | Apr. 22, 1873 | J. Braun | Improvement in machines for making machine-screws | |
| 143,273 | Sep. 30, 1873 | W.D. Chase | Machine for Cutting and Threading Pipes, &c. | 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 |
| 434,424 | Aug. 19, 1890 | A.W. Cash | Pipe Threading and Cutting Off Machine | pipe threading machines |
| 569,902 | Oct. 20, 1896 | W.C. Wells, F.E. Wells | Machine for Making Nipples | pipe making machines |
| 958,654 | May 17, 1910 | H.S. Land | Lathe and Other Tool Holder for Cutting, Shaping and Screwing Machines | lathe tool holders and tool posts |
| 1,673,979 | Jun. 19, 1928 | L.S. Hall | Cutting off and reaming attachment for threading machines and the like | pipe threading machines |
| 1,758,973 | May 20, 1930 | C. Rasmussen | Pipe-threading machine | pipe threading machines |
| 1,912,050 | May 30, 1933 | W.W. Vosper, W.R. Vosper | Pipe Tool | pipe threading machines |
