| All Patents in class 451/548 |
Patents 1 -
15
of 37
      |
| Number | Date | Patentee | Title | Type |
| 12,820 | May 08, 1855 | B. Hardinge | Facing Bed for Grinding Artificial Granite, Etc. | stone dressing machines |
| 70,393 | Nov. 05, 1867 | G.L. Benton | Improved emery-wheels for grinding and polishing saws, &c. | saw sharpening machines |
| 79,132 | Jun. 23, 1868 | A. Hathaway, J. Kendall | Polishing Glass | polishing and buffing machinery |
| 193,437 | Jul. 24, 1877 | V.F. Prentice, E.J. Worcester | Improvement in machines for grinding mower and reaper knives | grinders |
| 201,778 | Mar. 26, 1878 | G. Hart | Emery Wheel | grinding wheels |
| 261,198 | Jul. 18, 1882 | R. Barton | Dental Grinding Tool | dental apparatus |
| 293,398 | Feb. 12, 1884 | W.P. Barclay | Abrading Tool | lathe tools |
| 342,290 | May 18, 1886 | R. Dutton | Machine for Grinding Mowing Machine Knives | sharpeners |
| 344,919 | Jul. 06, 1886 | P.A. Otis | Improved planer-knife grinder | tool grinders |
| 359,964 | Mar. 22, 1887 | R. Dutton | Machine for grinding mower-knives | sharpeners |
| 465,376 | Dec. 15, 1891 | A. Johnston | Means for Grinding Cutlery or Other Articles | sharpening apparatus |
| 477,130 | Jun. 14, 1892 | J.H. Lawles | Machine for Turning Patterns in Pearl Ivory or Other Substances | button making machinery |
| 481,415 | Aug. 23, 1892 | J. McClellan | Polishing Wheel | polishing machines |
| 494,471 | Mar. 28, 1893 | F.N. Gardner, C.H. Besly | Grinding or polishing wheel and the art of manufacturing same | |
| 612,240 | Oct. 11, 1898 | L.E. Harper, C.L. Grohmann | Machine for dressing and grinding metal | grinders |
