| All Patents in class 451/340 |
Patents 1 -
15
of 59
      |
| Number | Date | Patentee | Title | Type |
| 16,782 | Mar. 10, 1857 | E. Andrews | Machine for grinding saws | making sawblades |
| 112,838 | Mar. 21, 1871 | J.L. Otis | Improvement in machines for grinding saw-teeth | saw sharpening machines |
| 158,172 | Dec. 29, 1874 | C.H. Hill, A.W. Proctor | Improvement in machine for grinding knives | cutter grinding |
| 217,795 | Jul. 22, 1879 | P.B. Hillyer | Combined Forge, Emery Wheel and Drill | |
| 230,715 | Aug. 03, 1880 | I.L. Penney | Grinding Twist Drills | tool grinders |
| 417,615 | Dec. 17, 1889 | A. Webster | Machine for Grinding Lathe Beds | surface grinders |
| 439,154 | Oct. 28, 1890 | F. Holz | Cutter Grinder | milling machines |
| 470,497 | Mar. 08, 1892 | W.S. Loveland, E.C. Henn | Journal | metalworking machine mechanisms |
| 521,836 | Jun. 26, 1894 | O.S. Walker | Bearing for emery-wheels | bench or pedestal grinders |
| 614,247 | Nov. 15, 1898 | H. Goldsmith, E.T. Goodhew | Grinding Machine | tool grinders |
| 626,436 | Jun. 06, 1899 | E. Mills | Grinding Machine | tool grinders |
| 640,669 | Jan. 02, 1900 | A.B. Landis | Grinding-machine | grinders |
| 681,440 | Aug. 27, 1901 | A.R. Clizbe | Grinding Machine | sharpeners |
| 861,739 | Jul. 30, 1907 | A.B. Landis | Grinding-machine | grinders |
| 932,791 | Aug. 31, 1909 | R.K. Blond, W.F. Groene | Cutter-grinder | tool grinders |
