| All Patents in class 451/361 |
Patents 1 -
15
of 30
      |
| Number | Date | Patentee | Title | Type |
| 130,014 | Jul. 30, 1872 | C. Burkholder | Improvement in Grindstones | grinders |
| 146,050 | Dec. 30, 1873 | J.H. Curran | Sharpening-Machines | sharpening machines |
| 173,234 | Feb. 08, 1876 | W.H. Ogilvie | Improvement in Machines for Grinding [Insertable] Saw-Teeth | saw sharpening machines |
| 211,096 | Jan. 07, 1879 | J.E. Hoppen | Improvement in grindstone-frames | grindstone frames |
| 215,901 | May 27, 1879 | C. Fest | Grinding Lathe | metal lathe accessories and attachments |
| 239,389 | Mar. 29, 1881 | D.R. Kenyon | Polishing and grinding machine | bench or pedestal grinders |
| 249,934 | Nov. 22, 1881 | C. Heaton | Safety-guard for emery-wheels | woodworking machine safety guards |
| 261,848 | Aug. 01, 1882 | B.H. Hadley | Emery Grinder | bench or pedestal grinders |
| 285,626 | Sep. 25, 1883 | D.B. Hyde | Grinding Wheel Frame | tool grinders |
| 426,860 | Apr. 29, 1890 | S. Ross, Jr. | Sand-paper machine for boots or shoes | sanding machines |
| 441,139 | Nov. 25, 1890 | G.G. Crowell | Journal-bearing for emery grinding-machines | bench or pedestal grinders |
| 569,806 | Oct. 20, 1896 | H. White | Grindstone-frame | grindstone frames |
| 688,355 | Dec. 10, 1901 | J. Sowle | Grinding or polishing machine | polishing machines |
| 845,878 | Mar. 05, 1907 | M. Machacek | Emery grinding-machine | bench or pedestal grinders |
| 982,166 | Jan. 17, 1911 | A.A. Wood | Grinding-Machine | sharpening machines |
