| All Patents in class 451/145 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 672,398 | Apr. 16, 1901 | J. Hartness | Lathe | automatic lathes |
| 1,534,301 | Apr. 21, 1925 | P. Conradson | Grinding Machine | internal grinders |
| 1,920,290 | Aug. 01, 1933 | W.L. Bryant | Grinding machine or the like | grinders |
| 2,076,808 | Apr. 13, 1937 | W.L. Bryant | Grinding machines | grinders |
| 2,175,057 | Oct. 03, 1939 | B.A. Kearns | Spindle Reciprocating Mechanism for Grinding Machines | grinding machines |
| 2,288,508 | Jun. 30, 1942 | M.H. Arms, J.B. Johnson | Grinding wheel mounting and control | grinders |
| 2,368,315 | Jan. 30, 1945 | E.D. Vancil, L.E. Mehlhope | Grinding Machine | cylindrical grinders |
| 2,410,038 | Oct. 29, 1946 | M.H. Arms, L.J. Barnard | Grinding machines | grinders |
| 2,585,533 | Feb. 12, 1952 | W.J. Bryant, T.H. Ljunggren, W.F. Moore | Internal grinding machine with automatic air gauge sizing | cylindrical grinders |
