| All Patents in class 451/369 |
Patents 1 -
10
of 50
      |
| Picture | Number | Date | Patentee | Title |
 | 29,512 | Aug. 07, 1860 | E.W. Nichols | Holder for Polishing-Wheels |
| | 58,504 | Oct. 02, 1866 | w.H. Strahan | Improved Tool-Rest for Grindstones |
 | 79,246 | Jun. 23, 1868 | M.V. Collins, M.M. Morse | Edge Tool Grinder |
 | 96,066 | Oct. 19, 1869 | E.A. White | Grinding Metal Plates |
 | 147,297 | Feb. 10, 1874 | F. White | Improvement in sharpening-machines |
| | 147,894 | Feb. 24, 1874 | N.P. Bradish | Tool-Holders |
 | 158,172 | Dec. 29, 1874 | C.H. Hill, A.W. Proctor | Improvement in machine for grinding knives |
 | 201,449 | Mar. 19, 1878 | A.K. Rider | Drill Grinder |
 | 243,770 | Jul. 05, 1881 | J.E. Woodbridge, F.N. Gardner | Holder for Grinding Tools |
 | 348,497 | Aug. 31, 1886 | G.A. Long | Tool-holder for grinding |
