| All Patents in class 451/361 |
Patents 1 -
10
of 30
      |
| Picture | Number | Date | Patentee | Title |
| | 130,014 | Jul. 30, 1872 | C. Burkholder | Improvement in Grindstones |
 | 146,050 | Dec. 30, 1873 | J.H. Curran | Sharpening-Machines |
 | 173,234 | Feb. 08, 1876 | W.H. Ogilvie | Improvement in Machines for Grinding [Insertable] Saw-Teeth |
 | 211,096 | Jan. 07, 1879 | J.E. Hoppen | Improvement in grindstone-frames |
| | 215,901 | May 27, 1879 | C. Fest | Grinding Lathe |
 | 239,389 | Mar. 29, 1881 | D.R. Kenyon | Polishing and grinding machine |
 | 249,934 | Nov. 22, 1881 | C. Heaton | Safety-guard for emery-wheels |
 | 261,848 | Aug. 01, 1882 | B.H. Hadley | Emery Grinder |
| | 285,626 | Sep. 25, 1883 | D.B. Hyde | Grinding Wheel Frame |
 | 426,860 | Apr. 29, 1890 | S. Ross, Jr. | Sand-paper machine for boots or shoes |
