| All Patents in class 451/397 |
Patents 1 -
15
of 31
      |
| Number | Date | Patentee | Title | Type |
| 70,788 | Nov. 12, 1867 | T. Birch, A. Sowden | Improvement in grinding machine for circular saws | making sawblades |
| 306,723 | Oct. 21, 1884 | J. Du Bois | Lathe for Turning Wheels | pulley turning lathes |
| 379,307 | Mar. 13, 1888 | R.B. Codling | Lathe | wood lathes |
| 610,677 | Sep. 13, 1898 | C.L. Grohmann | Tail-stock for milling-machines | milling machines |
| 969,183 | Sep. 06, 1910 | J.M. Nash | Abrading-machine | sanding machines |
| 1,290,896 | Jan. 14, 1919 | W.L. Bryant | Machine for grinding metal | cylindrical grinders |
| 1,535,452 | Apr. 28, 1925 | P. Conradson | Grinding Machine | internal grinders |
| 1,776,241 | Sep. 16, 1930 | F.S. Haas, J.E. Caster | Grinding Machinery | grinding machines |
| 1,790,848 | Feb. 03, 1931 | A. Schinkez, E.R. Smith | Automatic Lathe and Blank Feeding Means Therefor | metal lathes |
| 1,938,759 | Dec. 12, 1933 | H. Ernst | Grinding Machine | grinding machines |
| 1,972,316 | Sep. 04, 1934 | C.H. Randolph | Process of and apparatus for grinding internal surfaces of tubes | |
| 2,211,685 | Aug. 13, 1940 | B.A. Kearns, G.W. Binns | Centerless Bar Grinder Machine | grinding machines |
| 2,282,048 | May 05, 1942 | A.J. Graf | Headstock for Machine Tools | grinding machines |
| 2,344,371 | Mar. 14, 1944 | R.M. Shaw, Jr. | Ring Grinding Machine | grinding machines |
| 2,408,995 | Oct. 08, 1946 | J.J. Osplack | Spindle bearing | metalworking machine bearings |
