| All Patents in class 451/137 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 2,656 | May 30, 1842 | R.M. Hoe | Machinery for grinding and polishing metallic surfaces, particularly saw-plates | tool making machines |
| RE462 | May 05, 1857 | R.M. Hoe | Improvement in machinery for grinding and polishing metallic surfaces, particularly saw-plates | tool making machines |
| 81,126 | Aug. 18, 1868 | E. Andrews | Improvement in saw-grinding machines | making sawblades |
| 432,873 | Jul. 22, 1890 | A.K. Hatteberg | Sandpapering-machine | sanding machines |
| 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 | polishing machines |
| 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 | belt sanders |
| 1,846,132 | Feb. 23, 1932 | M.I. Mathewson | Grinding Machine | |
| 1,891,663 | Dec. 20, 1932 | C. Booth | Grinding Machinery | grinding machines |
| 1,982,287 | Nov. 27, 1934 | F.S. Haas, S. Einstein | Grinding Machine | grinding machines |
| 2,182,231 | Dec. 05, 1939 | R.K. Blond | Attachment for cutter grinders | tool grinders |
| 2,436,466 | Feb. 24, 1948 | J.C. Wilson | Method and Apparatus for Grinding and Lapping | surface grinders |
| 2,436,588 | Feb. 24, 1948 | J. Martin | Cam Grinding Machine | grinding machines |
