| All Patents in class 408/227 |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 8,752X | Apr. 08, 1835 | N.J. Lampman | Wood auger | drill bits |
| 25,990 | Nov. 01, 1859 | S. Wood | Auger | auger bits |
| 60,683 | Jan. 01, 1867 | W. Burlingame | Reamer | reamers |
| 85,021 | Dec. 15, 1868 | C. Murdock | Improvement in cylindrical saw | saw teeth |
| 385,088 | Jun. 26, 1888 | A. Benzie | Drilling Tool | drill bits |
| 456,258 | Jul. 21, 1891 | A.F. Daniels, D.B. Hutton | Drill for Drilling Square Holes | drill bits |
| 663,455 | Dec. 11, 1900 | K.O. Muehlberg | Cutter Tool | reamers |
| 1,283,740 | Nov. 05, 1918 | C.B. Groff | Drill | |
| 1,680,466 | Aug. 14, 1928 | W.H. Evans | Reaming tool | reamers |
| 1,680,510 | Aug. 14, 1928 | W.H. Evans | Valve-seat reamer | valve and seat maintenance |
| 1,827,510 | Oct. 13, 1931 | W.H. Evans | Valve seat reamer | valve and seat maintenance |
| 1,827,511 | Oct. 13, 1931 | W.H. Evans | Reamer | valve and seat maintenance |
| 1,884,460 | Oct. 25, 1932 | J.H. Williams | Facing Tool | facing heads |
| 1,941,790 | Jan. 02, 1934 | E.E. Davis | Reamer | reamers |
| 2,036,656 | Apr. 07, 1936 | R.S. Pyne, B.F. Stowell | Valve seat cutter | valve and seat maintenance |
