| All Patents in class 51/293 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
 | 8,246X | Jun. 14, 1834 | I. Fischer, Jr. | Manufacturing sandpaper |
| | 88,725 | Apr. 06, 1869 | C. Marsh | Improved Mode of Finishing and Truing Emery Wheels, &c. |
| | 124,559 | Mar. 12, 1872 | J.S. Elliott, J.F. Wood | Improvement in processes of repairing millstones |
 | 257,612 | May 09, 1882 | J. Renshaw | Method of Revivifying Abrading-Surfaces |
 | 467,254 | Jan. 19, 1892 | S.G. Hodges | Method of forming emery-wheels |
| | 494,471 | Mar. 28, 1893 | F.N. Gardner, C.H. Besly | Grinding or polishing wheel and the art of manufacturing same |
| | 494,472 | Mar. 28, 1893 | F.N. Gardner, C.H. Besly | Grinding or polishing wheel and the art of manufacturing same |
 | 1,126,423 | Jan. 26, 1915 | C.H. Driver | Sandpaper belting |
 | 1,499,094 | Jun. 24, 1924 | L.T. Medholdt, C.W. Blood | Method of grinding cutters |
| | 2,282,912 | May 12, 1942 | E. Van der Pyl | Grinding Wheel |
