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