| All Patents in class 451/541 |
Patents 1 -
15
of 28
      |
| Number | Date | Patentee | Title | Type |
| 10,017 | Sep. 13, 1853 | J.M. Smith | Improved cutter-head for molding machines | cutters |
| 110,102 | Dec. 13, 1870 | J.F. Wood | Improvement in the manufacture of emery-wheels | |
| 163,025 | May 11, 1875 | S.G. Morrison | Improvement in emery-wheels | grinding wheels |
| 201,778 | Mar. 26, 1878 | G. Hart | Emery Wheel | grinding wheels |
| 220,911 | Oct. 28, 1879 | L.D. Cogswell | Grinder | metal lathe accessories and attachments |
| 429,697 | Jun. 10, 1890 | C.H. Norton | Grinding Machine | grinders |
| 449,217 | Mar. 31, 1891 | A.T. Good | Polishing Cone | dental apparatus |
| 494,471 | Mar. 28, 1893 | F.N. Gardner, C.H. Besly | Grinding or polishing wheel and the art of manufacturing same | |
| 646,397 | Mar. 27, 1900 | W.H. Thorne, J.S. Bancroft | Grinding-Machine | tool grinders |
| 883,649 | Mar. 31, 1908 | A.B. Landis | Grinding-machine | grinders |
| 914,244 | Mar. 02, 1909 | C.M. Conradson | Method of Making Interchangeable Ground Glass Bottle Necks and Ground Glass Stoppers Therefore | |
| 921,717 | May 18, 1909 | A.B. Landis | Grinding-machine | grinders |
| 987,589 | Mar. 21, 1911 | E.S. Mummert | Grinding Machine for Sharpening Edged Tools | sharpening machines |
| 1,063,076 | May 27, 1913 | O.G. Simmons | File | making files |
| 1,121,671 | Dec. 22, 1914 | G.H. Sawyer | Grinding attachment for hand drills | handheld power tool accessories |
