| All Patents in class 451/450 |
Patents 46 -
59
of 59
      |
| Number | Date | Patentee | Title | Type |
| 2,741,881 | Apr. 17, 1956 | J.J. Falls | Grinder or the like | tool grinders |
| 2,745,229 | May 15, 1956 | S.G. Brady | Liquid Cooled Grinder Wheel | grinder wheels |
| 2,780,945 | Feb. 12, 1957 | J.A. Wilhelm, J. McEwan | Saw sharpener | saw sharpening machines |
| 2,958,164 | Nov. 01, 1960 | F.K. Beyer, B. William | Grinding machine | tool grinders |
| 3,032,940 | May 08, 1962 | D.E. Sutton | Mechanical device | |
| 3,047,987 | Aug. 07, 1962 | F.G. Krafft, W.G. Baldenhofer | Apparatus for Submerged Grinding | metalworking machine mechanisms |
| 3,066,578 | Dec. 04, 1962 | P.F. Olton | Temperature Control of Machine Tool | metalworking machine mechanisms |
| 3,325,949 | Jun. 20, 1967 | R.C. Fisher | Workpiece Cooling Apparatus for Grinding Machines | coolant apparatus |
| 3,345,281 | Oct. 03, 1967 | J.J. Falls | Electrolytic shaping apparatus | electrochemical machining |
| 3,448,023 | Jun. 03, 1969 | R.M. Bell | Belt type electro-chemical (or electrolytic) grinding machine | |
| 3,893,265 | Jul. 08, 1975 | D.C. Elm, A.J. Stinn | Vertical abrasive belt type surface grinder | metal sanding machines |
| 4,240,232 | Dec. 23, 1980 | J.C. Chwae | Coated Abrasive Superfinishing Stone and Method of Making Same | grinder wheels |
| 4,388,780 | Jun. 21, 1983 | S.C. Rees | Electric powered wet stone | |
| 4,607,459 | Aug. 26, 1986 | S.C. Rees | Combined hollow grinder, sharpener and honer | |
