| All Patents in class 451/132 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 41,419 | Feb. 02, 1864 | J.G. Baker | Improvement in Grinding Saws | tool making machines |
| 283,685 | Aug. 21, 1883 | F. Trier | Lathe for Dressing Stone | stoneworking lathes |
| 313,581 | Mar. 10, 1885 | H. Fairbrother | Machine for Dressing Saw Teeth | saw sharpening machines |
| 558,641 | Apr. 21, 1896 | G.A. Ensign | Polishing-machine | sanding machines |
| 667,924 | Feb. 12, 1901 | H.P. Schofield, L.L. Filstrup | Saw-sharpening machine | saw sharpening machines |
| 889,468 | Jun. 02, 1908 | F.L. Lane | Sanding-machine | sanding machines |
| 1,123,871 | Jan. 05, 1915 | A.L. Hatfield | Machine for sharpening safety-razor blades | sharpening machines |
