| All Patents in class 72/469 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 6,305 | Apr. 10, 1849 | N.C. Sanford, L.B. Smith | Machine for regulating the twist and diameter of screw-augers | tool making machines |
| 48,633 | Jul. 04, 1865 | E.H. Tracy | Improvement in Dies for Making Augers | making drills and augers |
| 96,847 | Nov. 16, 1869 | J. Swan | Die for Forming Cook's Bits | making drills and augers |
| 183,797 | Oct. 31, 1876 | L. Chapman | Machines for Punching and Swaging Metal | metal punching machines |
| 224,156 | Feb. 03, 1880 | J.S. Deuse, A.H. Deuse | Die for forming Double-Twist Gimlets | making drills and augers |
| 264,470 | Sep. 19, 1882 | C.E. Andrews, P.W. Myers | Die for Heading Auger-Blanks | making drills and augers |
| 294,698 | Mar. 04, 1884 | N.C. Stiles | Die for forming pulley-centers | pulley making machines |
| 378,251 | Feb. 21, 1888 | C.H. Irwin | Die for Making Auger-Bits | making drills and augers |
| 419,622 | Jan. 21, 1890 | J. Bailey | Die for Forming Auger-Bits | making drills and augers |
| 659,522 | Oct. 09, 1900 | Z.T. Furbish | Apparatus for Making Ribbed Sleeves or Wheels | |
| 1,486,976 | Mar. 18, 1924 | B.J. Lindgren | Machine for compressing corrugated pipes | |
| 2,994,237 | Aug. 01, 1961 | L. Pelphrey, Administratrix, H. Pelphrey, deceased (Estate of) | Tooth Forming Tool | gear cutting tools |
| 3,015,243 | Jan. 02, 1962 | J.C. Drader | Tool for Pressure Forming Toothed Elements | gear making machines |
