| All Patents in class 451/159 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 516,146 | Mar. 06, 1894 | C.A. Worden | Machine for sharpening razors, shears, &c. | |
| 1,032,758 | Jul. 16, 1912 | T. Lumsden | Tool and like grinding machine | tool grinders |
| 1,754,139 | Apr. 08, 1930 | H.H. Asbridge | Grinding Machinery | grinding machines |
| 2,352,146 | Jun. 20, 1944 | J. Desenberg | Grinding and Polishing Machine | polishing and buffing machinery |
| 2,578,884 | Dec. 18, 1951 | L.C. Hammond | Work holder for grinding router bits | |
| 2,922,258 | Jan. 26, 1960 | P.J. Robischung, L.C. Hammond, M.M. Bass, R.M. Bell | Grinder with oscillating head | tool grinders |
| 2,958,164 | Nov. 01, 1960 | F.K. Beyer, B. William | Grinding machine | tool grinders |
| 2,970,407 | Feb. 07, 1961 | J.H. Pasell | Drill point grinding machine | making drills and augers |
| 2,971,296 | Feb. 14, 1961 | R.M. Bell, M.M. Bass | Grinder with oscillating head | |
| 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 | |
| 3,012,380 | Dec. 12, 1961 | R.M. Bell, M.M. Bass | Table extension for a grinding machine | |
| 3,029,563 | Apr. 17, 1962 | R.M. Bell, M.M. Bass | Guard for grinding wheel | |
| 3,114,223 | Dec. 17, 1963 | L.C. Hammond | Table support structure | |
