| All Patents in class 409/76 |
Patents 1 -
10
of 24
      |
| Picture | Number | Date | Patentee | Title |
| | 141,760 | Aug. 12, 1873 | S.W. Card | Machines for milling twist-drills |
| | 144,100 | Oct. 28, 1873 | E. Horton | Screw Threading Machines |
| | 164,115 | Jun. 08, 1875 | T. Decker, L. Weaver | Machine for Making Twist Drills |
 | 195,963 | Oct. 09, 1877 | G.R. Stetson | Improvement in machines for clearing twist-drills |
 | 209,782 | Nov. 12, 1878 | J. Swan | Improvement in the Manufacture of Auger-Bits |
 | 303,239 | Aug. 05, 1884 | J. Swan | Mechanism for Manufacturing Augers |
| | 882,290 | Mar. 17, 1908 | J. Bowen | Machine for Cutting Screws, &c. |
 | 893,431 | Jul. 14, 1908 | J. Bowen | Machine for Cuting Screw, & c. |
| | 1,058,711 | Apr. 15, 1913 | E.E. Beck | Cut-back-die-thread machine |
| | 1,177,376 | Mar. 28, 1916 | J. Bowen | Milling Machine |
