| All Patents in class 408/229 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 82,583 | Sep. 29, 1868 | Q.S. Backus | Improved chuck-drill | drill bits |
| 117,237 | Jul. 25, 1871 | S.L. Abbott | Improvement in Countersinks | countersinks |
| RE4,754 | Feb. 13, 1872 | S.L. Abbott | Improvement in Countersinks | countersinks |
| 241,974 | May 24, 1881 | S. Graves | Lathe Tool for Boring and Reaming | lathe tools |
| 336,709 | Feb. 23, 1886 | B. Forstner | Auger | drill bits |
| 352,829 | Nov. 16, 1886 | E.L. Mansfield | Reaming Tool | reamers |
| 479,682 | Jul. 26, 1892 | J.W. Tompkins | Reamer | countersinks |
| 1,241,176 | Sep. 25, 1917 | H.J. Watts | Drill or boring member | |
| 1,399,142 | Dec. 06, 1921 | W.L. Miller | Reamer Head | reamers |
| 1,409,921 | Mar. 21, 1922 | C.C. Buck | Reamer | reamers |
| 1,725,515 | Aug. 20, 1929 | E.W. Peterson, A.H. Hawkinson | Method of sharpening hollow or mortiser chisels | sharpening machines |
| 1,791,649 | Feb. 10, 1931 | W.W. Vosper | Pipe Reamer | pipe reamers |
| 2,923,181 | Feb. 02, 1960 | C. Grage | Combination reaming and burnishing tool | |
| 2,940,342 | Jun. 14, 1960 | J.A. Lavallee | Reamers | reamers |
| 4,032,250 | Jun. 28, 1977 | J.A. Lavallee | Reamer construction | reamers |
