| All Patents in class 76/102 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 208,862 | Oct. 08, 1878 | J. Swan | Improvement in the Manufacture of Auger-Bits | making drills and augers |
| 209,782 | Nov. 12, 1878 | J. Swan | Improvement in the Manufacture of Auger-Bits | making drills and augers |
| 254,184 | Feb. 28, 1882 | J. Morris, T. Wood | Auger-Bit | auger bits |
| 321,967 | Jul. 14, 1885 | F.W. Hastings | Device for Making Dies for Forming Auger Heads | |
| 333,170 | Dec. 29, 1885 | G.F. Stearns | Method of auger manufacture | auger bits |
| 364,153 | May 31, 1887 | C. Whitehouse | Auger Bit | auger bits |
| 846,113 | Mar. 05, 1907 | A. Krieger | Manufacture of single-spiral augers | making drills and augers |
