| All Patents in class 451/404 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 162,698 | Apr. 27, 1875 | L. Uilting, J. Schneider | Improvement in machines for shaping tobacco-pipe bowls | specialty woodworking machines |
| 667,321 | Feb. 05, 1901 | M.L. Keyes | Edge Tool Grinder | sharpening machines |
| 896,357 | Aug. 18, 1908 | R.S. Brown | Machine for Sharpening Cutter Teeth | tool grinders |
| 2,214,166 | Sep. 10, 1940 | C.J. Hertlein | Dividing Head | indexers and dividers |
| 2,341,099 | Feb. 08, 1944 | P. Hellman | Dividing Head | indexers and dividers |
| 2,441,832 | May 18, 1948 | L.T. Morawski | Indexing Fixture | indexers and dividers |
| 2,449,459 | Sep. 14, 1948 | T. Eckert | Perforator Grinding Fixture | grinding attachments |
| 2,725,690 | Dec. 06, 1955 | W.F. French | Cutter grinding mandrel with tooth rest | |
| 2,771,169 | Nov. 20, 1956 | M. Wahlstrom | Rotary Work Table | rotary tables |
