| All Patents in class 451/12 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 1,026,022 | May 14, 1912 | W.F. Cremean | Grinding Machine | cylindrical grinders |
| 1,289,375 | Dec. 31, 1918 | F.E. Bright | Grinding Machine | |
| 1,624,211 | Apr. 12, 1927 | W.L. Bryant | Multispindle internal-combustion machine | cylindrical grinders |
| 1,920,290 | Aug. 01, 1933 | W.L. Bryant | Grinding machine or the like | grinders |
| 2,087,662 | Jul. 20, 1937 | E.T. Bysshe, R.T. Finn | Grinding Machine | grinder dressers |
| 2,294,184 | Aug. 25, 1942 | A.M. Johnson | Honing machine | honing machines |
| 2,345,581 | Apr. 04, 1944 | H.J. Caldwell | Machine tool | |
| 2,587,352 | Feb. 26, 1952 | S.F. Manning | Thread-cutting machine having rapid traverse plus positive controlled feed | |
