| All Patents in class 72/469 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 6,305 | Apr. 10, 1849 | N.C. Sanford, L.B. Smith | Machine for regulating the twist and diameter of screw-augers |
 | 48,633 | Jul. 04, 1865 | E.H. Tracy | Improvement in Dies for Making Augers |
 | 96,847 | Nov. 16, 1869 | J. Swan | Die for Forming Cook's Bits |
| | 183,797 | Oct. 31, 1876 | L. Chapman | Machines for Punching and Swaging Metal |
 | 224,156 | Feb. 03, 1880 | J.S. Deuse, A.H. Deuse | Die for forming Double-Twist Gimlets |
 | 264,470 | Sep. 19, 1882 | C.E. Andrews, P.W. Myers | Die for Heading Auger-Blanks |
 | 294,698 | Mar. 04, 1884 | N.C. Stiles | Die for forming pulley-centers |
 | 378,251 | Feb. 21, 1888 | C.H. Irwin | Die for Making Auger-Bits |
 | 419,622 | Jan. 21, 1890 | J. Bailey | Die for Forming Auger-Bits |
 | 659,522 | Oct. 09, 1900 | Z.T. Furbish | Apparatus for Making Ribbed Sleeves or Wheels |
