| All Patents in class 72/95 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
 | 8,196X | May 13, 1834 | O. Snow | Auger twisting machine |
 | 851 | Jul. 24, 1838 | R.N. Watrous, E. L'Hommedieu | Machinery for manufacturing double-twist screw-augers |
 | 12,583 | Mar. 27, 1855 | R. Cook | Machine for Turning the Lips of Augers |
 | 54,893 | May 22, 1866 | R.H. Boyd, W.W. Grier | Improved Machine for Making Auger Bits |
 | RE2,712 | Aug. 06, 1867 | R.H. Boyd, W.W. Grier | Improved Machine for Making Augers |
| | 201,530 | Mar. 19, 1878 | C.F. Jacobson | Machine for Making Twist Drills |
| | 245,741 | Aug. 16, 1881 | T.W. Webb, P.D. Nicols | Machine for Twisting Drill Blanks |
| | 331,904 | Dec. 08, 1885 | S. Moore | Machine for Making Twist Drills |
| | 426,439 | Apr. 29, 1890 | J.F. Fife | Machine for Corrugating Tubing |
| | 434,060 | Aug. 12, 1890 | C.D. Wainwright, J.S. Hansen | Machine for Corrugating Tubes |
