| All Patents in class 408/224 |
Patents 31 -
41
of 41
      |
| Number | Date | Patentee | Title | Type |
| 1,260,068 | Mar. 19, 1918 | J.M. Sanders | Auger | auger bits |
| 1,483,082 | Feb. 12, 1924 | H. Dosimont | Drill Bit or Auger | auger bits |
| 1,721,378 | Jul. 16, 1929 | G.J. Draeger | Floating Tool Holder | drilling and boring tool holders |
| 2,079,954 | May 11, 1937 | W.W. Vosper | Turning, Facing, and Threading Tool | tap and die holders |
| 2,655,964 | Oct. 20, 1953 | J.A. Labbee, Jr. | Screw Mate | drill bits |
| 2,681,673 | Jun. 22, 1954 | B.A. Mackey | Drill bit | wood drill bits |
| 2,689,131 | Sep. 14, 1954 | D.E. Priest | Screwdriver with removable blade | screwdriver blades |
| 2,794,468 | Jun. 04, 1957 | R.W. Huxtable | Woodcutting bit assembly | wood drill bits |
| 2,829,543 | Apr. 08, 1958 | W.C. Bergstrom | Countersinking, counterboring, and deburring tool | |
| 3,758,222 | Sep. 11, 1973 | H.C. Oakes | Drill bit | drill bits |
| 4,595,322 | Jun. 17, 1986 | B. Clement | Spade drill bit | drill bits |
