| All Patents in class 451/137 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
 | 2,656 | May 30, 1842 | R.M. Hoe | Machinery for grinding and polishing metallic surfaces, particularly saw-plates |
 | RE462 | May 05, 1857 | R.M. Hoe | Improvement in machinery for grinding and polishing metallic surfaces, particularly saw-plates |
 | 81,126 | Aug. 18, 1868 | E. Andrews | Improvement in saw-grinding machines |
| | 432,873 | Jul. 22, 1890 | A.K. Hatteberg | Sandpapering-machine |
 | 508,196 | Nov. 07, 1893 | T.A. Willson, H. Bilgram | Machine for grinding the edges of spectacle or eyeglass lenses |
| | 779,321 | Jan. 03, 1905 | H. Schuessler | Metal Polishing Machine |
 | 1,130,454 | Mar. 02, 1915 | J. Wegner | Shaping Machine |
| | 1,259,770 | Mar. 19, 1918 | C.G. Olson | Grinding Machine |
 | 1,364,324 | Jan. 04, 1921 | J. Siakel | Sandpapering-machine |
| | 1,846,132 | Feb. 23, 1932 | M.I. Mathewson | Grinding Machine |
