| All Patents in class 451/273 |
Patents 1 -
10
of 37
      |
| Picture | Number | Date | Patentee | Title |
| | 2,329 | Nov. 03, 1841 | T.J. Cornell | Machine for Dressing Granite |
 | 45,679 | Dec. 27, 1864 | P. Schrag | Improvement in machines for sandpapering pencils |
| | 98,850 | Jan. 18, 1870 | H. Harpin, J. Coulter | Stone Dressing Machine |
 | 108,822 | Nov. 01, 1870 | J.S. Lane, J.H. Pitkin | Machine for Grinding and Polishing Metal |
 | 178,398 | Jun. 06, 1876 | P. Barker | Sandpapering-machine |
 | 182,284 | Sep. 19, 1876 | J.L. Otis | Planer-knife grinder |
 | 238,366 | Mar. 01, 1881 | W.H. Doane | Grinding machine |
| | RE9,847 | Aug. 23, 1881 | P. Barker | Sandpapering-machine |
| | 271,966 | Feb. 06, 1883 | C.V. Woerd | Apparatus for Grinding Lathe Cutters |
| | 420,022 | Jan. 21, 1890 | W.F. Steinhoff | Grinding-machine |
