| All Patents in class 451/901 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 2,167,758 | Aug. 01, 1939 | W.M. Fairbairn, A.M. Johnson | Method and machine for honing cylindrical surfaces | honing machines |
| 2,176,316 | Oct. 17, 1939 | F.A. Swanson | Honing machine | honing machines |
| 2,197,538 | Apr. 16, 1940 | A.H. Dall, G.W. Binns | Metal Finishing Machine | grinding machines |
| 2,209,307 | Jul. 30, 1940 | F. Esz, A.H. Dall | Surface Finishing Machine | grinding machines |
| 2,224,423 | Dec. 10, 1940 | G.W. Binns | Process and Apparatus for Finishing Preground Articles | grinding machines |
| 2,257,452 | Sep. 30, 1941 | A.H. Dall, G.W. Binns | Metal Finishing | grinding machines |
