| All Patents in class 76/115 |
Patents 16 -
30
of 50
      |
| Number | Date | Patentee | Title | Type |
| 1,221,303 | Apr. 03, 1917 | W.F. Folmer | Gear Cutting Machine | gear making machines |
| 1,267,514 | May 28, 1918 | S.A. Cogsdill | Method of Salvaging Reamers or Like Tools | reamers |
| 1,273,249 | Jul. 23, 1918 | E. Lurker | Cutting Tool for Lathes, Planers, Shapers, and the Like | metal planers |
| 1,278,629 | Sep. 10, 1918 | H. Francis | Milling and the Like Cutter | milling machine cutters |
| 1,376,438 | May 03, 1921 | W.B. Huther | Inserted-tooth cutter-head and method of making the same | cutterheads |
| 1,383,707 | Jul. 05, 1921 | W.C. Farnum | Art of making gear-cutters | |
| 1,385,976 | Jul. 26, 1921 | E. Walker | Method of making crown-openers | combination cork extractors |
| 1,403,011 | Jan. 10, 1922 | S.A. Cogsdill | Method of Salvaging Cutting Tools | reamers |
| 1,536,736 | May 05, 1925 | A.W. Erdman, P.F. Vokal | Process of Making Milling Cutters | milling machine cutters |
| 1,586,186 | May 25, 1926 | A.W. Erdman | Milling Hob | milling machine cutters |
| 1,621,226 | Mar. 15, 1927 | S.J. Welter | Milling cutter | milling machine cutters |
| 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 |
| 1,771,709 | Jul. 29, 1930 | E.F. Gibbs | Method of Forming Turning Tool Holders | lathe tool holders and tool posts |
| 1,825,007 | Sep. 29, 1931 | N.F. McNaught | Valve seat reconstruction tool | |
