| All Patents in class 408/225 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 101,164 | Mar. 22, 1870 | J.G. Robinson | Improvement in hub-reamer | wheelwright |
| 370,484 | Sep. 27, 1887 | A. Latham | Counterbore Reamer or Countersink | metalworking counterbores |
| 631,572 | Aug. 22, 1899 | L. Judson | Countersink Attachment | countersinks |
| 782,221 | Feb. 14, 1905 | P.J. Creeden | Auger-Bit | auger bits |
| 996,612 | Jul. 04, 1911 | J.W. Caldwell | Auger-Bit | auger bits |
| 1,667,218 | Apr. 24, 1928 | T.S. Purnis | Tool for planing valve seats | valve and seat maintenance |
| 2,829,544 | Apr. 08, 1958 | W.C. Bergstrom | Countersinking and counterboring tool | metalworking countersinks |
| 4,032,251 | Jun. 28, 1977 | T.A. Ribich | Countersinking and deburring tool | metalworking countersinks |
| 4,527,449 | Jul. 09, 1985 | W.E. Sydlowski, H.A. Trent | Boring bit and method for manufacture thereof | wood drill bits |
| 4,720,219 | Jan. 19, 1988 | F.N. Rabo, S.J. Masonek | Reboring Tool | |
