| All Patents in class 451/557 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
 | 81,520 | Aug. 25, 1868 | J.C. McAfee | Plane with an Abrasive Medium |
| | 220,914 | Oct. 28, 1879 | C.M. Currier | Whetstone Holder |
| | 272,480 | Feb. 20, 1883 | H.A. Rowland | Apparatus for Grinding Screws |
| | 339,683 | Apr. 13, 1886 | W.H. Parkin | Emery Knife Sharpener |
| | 430,094 | Jun. 10, 1890 | A.D. Spencer | Tool for Turning Dynamo Commutators |
 | 442,062 | Dec. 02, 1890 | J.E. Lloyd | Glazier's Diamond |
 | 928,154 | Jul. 13, 1909 | J.H. Prugh | Surfacing and polishing machine |
| | 1,024,126 | Apr. 23, 1912 | M.D. Fletcher | Wheel Dresser and Tool Holder |
| | 1,185,259 | May 30, 1916 | C.H. Stephan | Emery-wheel dresser |
| | 1,252,612 | Jan. 08, 1918 | R.W. Perry | Sharpening Device |
