| All Patents in class 408/208 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 60,342 | Dec. 11, 1866 | S.S. Crocker | Tap Borer & Reamer | tapered reamers |
| 82,374 | Sep. 22, 1868 | H. Asbury, J.G. Baker | Improvement in Bung-Borers | tapered reamers |
| 130,488 | Aug. 13, 1872 | R.J. Croacher | Improvement in Reamers | tapered reamers |
| 132,883 | Nov. 05, 1872 | R.A. Whitmore | Improvement in Auger-Bits | drill bits |
| 332,274 | Dec. 15, 1885 | P. Miller | Hollow auger | augers |
| 410,863 | Sep. 10, 1889 | J. Swan | Bung Borer | tapered reamers |
| 424,565 | Apr. 01, 1890 | P. Miller | Auger | portable timber mortisers |
| 710,700 | Oct. 07, 1902 | J. Lund | Boring Implement | hollow bits |
| 877,592 | Jan. 28, 1908 | P.J. Creedon, W.G. Parry | Head for Boring-Bits | hollow bits |
| 952,916 | Mar. 22, 1910 | W.G. Lloyd | Reamer and Auger | tapered reamers |
| 965,664 | Jul. 26, 1910 | T.E. Stevenson | Bung-Hole Borer/Reamer | tapered reamers |
| 1,139,198 | May 11, 1915 | J. Lund | Auger | auger bits |
| 1,352,313 | Sep. 07, 1920 | R. Prew | Auger | tapered reamers |
| 1,712,876 | May 14, 1929 | J.V. Dolezal | Wire-Threading Bit | hollow bits |
| 2,794,469 | Jun. 04, 1957 | W.H. Shortell | Hole saws | hollow bits |
