| All Patents in class 451/273 |
Patents 31 -
37
of 37
      |
| Number | Date | Patentee | Title | Type |
| 2,318,456 | May 04, 1943 | A.N. Blum | Cutting chain sharpener | bench or pedestal grinders |
| 2,400,767 | May 21, 1946 | C. Melidoni, H. Gass | Grinding attachment | cylindrical grinders |
| 2,484,708 | Oct. 11, 1949 | F.P. Healy | Work supporting cradle for grinding machines | surface grinders |
| 2,633,678 | Apr. 07, 1953 | H.F. Smith | Machine Tool and Method of Operation | metalworking machine mechanisms |
| 2,725,690 | Dec. 06, 1955 | W.F. French | Cutter grinding mandrel with tooth rest | |
| 3,073,076 | Jan. 15, 1963 | W.F. French | Radius cutter grinding machine | |
| 3,181,283 | May 04, 1965 | P.B. Tuttle | Means for cutting chip breaker grooves | |
