| All Patents in class 451/397 |
Patents 1 -
10
of 33
      |
| Picture | Number | Date | Patentee | Title |
 | 70,788 | Nov. 12, 1867 | T. Birch, A. Sowden | Improvement in grinding machine for circular saws |
| | 306,723 | Oct. 21, 1884 | J. Du Bois | Lathe for Turning Wheels |
| | 379,307 | Mar. 13, 1888 | R.B. Codling | Lathe |
 | 610,677 | Sep. 13, 1898 | C.L. Grohmann | Tail-stock for milling-machines |
 | 969,183 | Sep. 06, 1910 | J.M. Nash | Abrading-machine |
 | 1,290,896 | Jan. 14, 1919 | W.L. Bryant | Machine for grinding metal |
| | 1,535,452 | Apr. 28, 1925 | P. Conradson | Grinding Machine |
| | 1,776,241 | Sep. 16, 1930 | F.S. Haas, J.E. Caster | Grinding Machinery |
| | 1,790,848 | Feb. 03, 1931 | A. Schinkez, E.R. Smith | Automatic Lathe and Blank Feeding Means Therefor |
| | 1,938,759 | Dec. 12, 1933 | H. Ernst | Grinding Machine |
