| All Patents in class 451/367 |
Patents 31 -
45
of 45
      |
| Number | Date | Patentee | Title | Type |
| 1,773,448 | Aug. 19, 1930 | C.E. Davidson | Tool Holder for Grindstones | sharpening tool holders |
| 1,995,536 | Mar. 26, 1935 | A.J. Dremel | Razor blade sharpener | sharpening machines |
| 2,069,097 | Jan. 26, 1937 | P.H. Root | Knife grinder | sharpening machines |
| 2,152,729 | Apr. 04, 1939 | C.C. Chartier | Universal Tool Sharpening and Work Holder | sharpening tool holders |
| 2,207,804 | Jul. 16, 1940 | F.O. Hoagland | Drill Grinder | drill sharpening machines |
| 2,415,121 | Feb. 04, 1947 | H.V. Boehnke, C.A. Wiken | Drill grinder | cutter grinding |
| 2,460,078 | Jan. 25, 1949 | J.D. Faudree | Work Holder for Tool Grinders | sharpening tool holders |
| 2,481,936 | Sep. 13, 1949 | M.A. Lord | Device for holding and setting jointer knives | cutterhead machine accessories |
| 2,741,077 | Apr. 10, 1956 | E.F. Ayer | Clamping devices | sharpening jigs and fixtures |
| 2,988,857 | Jun. 20, 1961 | R.M. Bell, M.M. Bass | Grinding machine | |
| 2,988,858 | Jun. 20, 1961 | R.M. Bell, M.M. Bass | Grinding machine | |
| 2,997,821 | Aug. 29, 1961 | T.F. Millick, Sr., G.A. Dixon | Adapter for Grinding Plane Knives | grinding machines |
| 3,181,283 | May 04, 1965 | P.B. Tuttle | Means for cutting chip breaker grooves | |
| 5,545,081 | Aug. 13, 1996 | L.C. Brickner, X. Lei, J.L. Haffely | Tool fixture for abrading apparatus | |
| 6,926,596 | Aug. 09, 2005 | W.A. Tarris | Tool Sharpening Apparatus | tool grinders |
