| All Patents in class 409/70 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 153,804 | Aug. 04, 1874 | H.E. Boyd | Lathe Attachments for Cutting Screw Taps | metal lathe accessories and attachments |
| 627,299 | Jun. 20, 1899 | F.G. Echols | Metal-working machine | milling machines |
| 688,515 | Dec. 10, 1901 | B.M. Hanson | Metal Working Machine | milling machines |
| 920,606 | May 04, 1909 | A.L. Moore | Machine For Cutting Threads On Shanks of Wrench Jaws | wrench jaw components |
| 1,200,046 | Oct. 03, 1916 | A.M. Thompson | Screw-Thread-Milling Machine | metal thread milling machines |
| 1,252,763 | Jan. 08, 1918 | G.W. Drake, O. Zerk | Thread Milling Machine | metal threading machines |
| 1,274,502 | Aug. 06, 1918 | O.S. Bickford | Machine for Flutiing Twist Drill Blanks | making drills and augers |
| 2,090,992 | Aug. 24, 1937 | W.D. Archea | Thread Milling Machine | milling machines |
| 2,382,662 | Aug. 14, 1945 | A.J. Prance | Thread milling machine | tapping machines |
