| All Patents in class 76/115 |
Patents 31 -
45
of 50
      |
| Number | Date | Patentee | Title | Type |
| 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 |
| 1,833,980 | Dec. 01, 1931 | W.O. Thewes | Pipe cutter | pipe cutters |
| 1,864,497 | Jun. 21, 1932 | O. Severson | Method of Forge-Welding Stellite | welding |
| 1,884,460 | Oct. 25, 1932 | J.H. Williams | Facing Tool | facing heads |
| 1,962,162 | Jun. 12, 1934 | R.R. Weddell | Step Locked Inserted Blade Cutter | milling machine cutters |
| 1,962,725 | Jun. 12, 1934 | O. Severson | Cross Locked Inserted Blade Cutter | milling machine cutters |
| 1,964,972 | Jul. 03, 1934 | H.M. Binns | Method of Making Cutting Tools | milling machine cutters |
| 1,974,215 | Sep. 18, 1934 | A.J. Kilmer | Cutting Tool | lathe tools |
| 1,989,476 | Jan. 29, 1935 | W.H. Evans | Expansion reamer | reamers |
| 1,989,652 | Jan. 29, 1935 | R.S. Drummond | Method for finishing internal gears | gear making machines |
| 2,036,656 | Apr. 07, 1936 | R.S. Pyne, B.F. Stowell | Valve seat cutter | valve and seat maintenance |
| 2,049,491 | Aug. 04, 1936 | H.Q. Munn, J.C. Drader | Method of Forming Hobs for Bevel Gears | gear cutting tools |
| 2,119,298 | May 31, 1938 | A.W. Simowski | Gear Finishing Tool | gear cutting tools |
| 2,199,343 | Apr. 30, 1940 | E.J. Lapointe | Method of reclaiming broach tools | broaches |
