| All Patents in class 408/201 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 55,144 | May 29, 1866 | H.T. Moody | Countersink for Bolts | countersinks |
| 63,822 | Apr. 16, 1867 | E. Young | Improvement in Wood Reamers | tapered reamers |
| 95,379 | Sep. 28, 1869 | T.M. Richardson | Auger with Detachable Tip | auger bits |
| 413,316 | Oct. 22, 1889 | W.J. Dobson | Counterbore Auger Attachment | drill accessories |
| 548,385 | Oct. 22, 1895 | F.W. Nelson | Auger Bit with Detachable Tip | auger bits |
| 611,254 | Sep. 27, 1898 | A.R. Jackson | Tool for Facing Castings | lathe tools |
| 808,245 | Dec. 26, 1905 | J. Lund | Wood-Boring Implement | auger bits |
| 1,261,348 | Apr. 02, 1918 | V. Boitout | Circular Dado and Molding Plane | |
| 1,336,466 | Apr. 13, 1920 | J.M. Lamb | Tool Holder or Tool | drilling and boring tool holders |
| 1,902,062 | Mar. 21, 1933 | W.H. Evans | Expansion reamer | reamers |
| 2,226,226 | Dec. 24, 1940 | O.C. Hedin | Removable pilot for counterbore or reamer | metalworking countersinks |
| 2,308,055 | Jan. 12, 1943 | S.A. Cogsdill | Adjustable countersink structure | metalworking countersinks |
| 2,372,028 | Mar. 20, 1945 | V.E. Smith | Counterboring Tool With Pilot and Holder | drilling and boring tool holders |
| 4,720,219 | Jan. 19, 1988 | F.N. Rabo, S.J. Masonek | Reboring Tool | |
