| All Patents in class 451/419 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 316,156 | Apr. 21, 1885 | H. Leverentz | Planing-machine attachment | woodworking machine sharpening mechanisms |
| 342,290 | May 18, 1886 | R. Dutton | Machine for Grinding Mowing Machine Knives | sharpeners |
| 694,056 | Feb. 25, 1902 | R.H. Foos | Sharpening Device for Grinding-Plates | grinding machines |
| 874,355 | Dec. 17, 1907 | C.W. Blood, C.G. Osteman | Knife-jointer for the bottom cutter-heads of wood-planers | wood planer accessories |
| 985,473 | Feb. 28, 1911 | J.R. Thomas | Blade-truing device | woodworking machine sharpening mechanisms |
| 993,398 | May 30, 1911 | O.B. Osborn | Adjusting and grinding planer-knives | woodworking machine sharpening mechanisms |
| 1,054,936 | Mar. 04, 1913 | H.A. Perkins | Jointing attachment for cutter-heads | woodworking machine sharpening mechanisms |
| 1,282,735 | Oct. 29, 1918 | L. Blumenthal | Knife Sharpener for Cloth Cutting Machines | |
| 1,834,034 | Dec. 01, 1931 | E.P. Norton, A.G. Wheeler | Stave planer cutter head | cutterheads |
| 1,844,330 | Feb. 09, 1932 | L.T. Medholdt | Apparatus for truing the teeth of saw blades | woodworking machine sharpening mechanisms |
| 2,651,219 | Sep. 08, 1953 | F.M. Burton, R.S. Tower | Saw Sharpener | saw sharpening machines |
| 2,792,036 | May 14, 1957 | R.A. Buttke | Planer and attachments therefor | wood planers |
