| All Patents in class 451/367 |
Patents 1 -
15
of 46
      |
| Number | Date | Patentee | Title | Type |
| 7,010X | Apr. 19, 1832 | G.A. Madeira | Machinery for holding and grinding edge tools | sharpening machines |
| 5,902 | Nov. 07, 1848 | J.W. Chapman, W.Z. Chapman | Honing Machine | sharpening machines |
| 43,518 | Jul. 12, 1864 | S.D. McLelland | Improvement in Grinding Edge-Tools | bench or pedestal grinders |
| 62,566 | Mar. 05, 1867 | A.R. Reynolds | Machine for Grinding Metal Plates | surface grinders |
| 93,031 | Jul. 27, 1869 | L. Zimmerman | Improvement in Grinding Edge-Tools | bench or pedestal grinders |
| 147,921 | Feb. 24, 1874 | J.P. Fay | Improvement in Tool-Grinding Machines | sharpening machines |
| 173,234 | Feb. 08, 1876 | W.H. Ogilvie | Improvement in Machines for Grinding [Insertable] Saw-Teeth | saw sharpening machines |
| 183,798 | Oct. 31, 1876 | A.F. Champlin | Improvement in Tools for Sharpening Drills | bench or pedestal grinders |
| 193,748 | Jul. 31, 1877 | C.P. Brown | Improvement in Devices for Applying Edge-Tools to Sharpeners | sharpening machines |
| 354,690 | Dec. 21, 1886 | H. Cleary | Tool-holder for grindstones | bench or pedestal grinders |
| 390,931 | Oct. 09, 1888 | B.D. Whitney | Sharpening-machine | industrial machine gearing |
| 418,977 | Jan. 07, 1890 | C.E. Forry | Machine for Grinding Lawn Mower Knives | sharpening machines |
| 451,801 | May 05, 1891 | C. Bransgrove | Plane-Iron-Sharpening Apparatus | sharpening machines |
| 487,140 | Nov. 29, 1892 | C.A. Worden | Machine for sharpening razors | |
| 516,146 | Mar. 06, 1894 | C.A. Worden | Machine for sharpening razors, shears, &c. | |
