| All Patents in class 451/374 |
Patents 1 -
10
of 77
      |
| Picture | Number | Date | Patentee | Title |
 | 79,213 | Jun. 23, 1868 | H. Disston | Improvement in Device for Holding Rotary Cutters while being Ground |
 | 95,988 | Oct. 19, 1869 | A.G. Coes | Sharpening Machine |
| | 241,497 | May 17, 1881 | S. Lawton | Machine for Holding Milling Tools for Grinding |
| | 271,966 | Feb. 06, 1883 | C.V. Woerd | Apparatus for Grinding Lathe Cutters |
 | 319,794 | Jun. 09, 1885 | M. Covel | Saw sharpening machine |
 | 326,889 | Sep. 22, 1885 | D. Slate | Gear-Cutter |
| | 341,437 | May 04, 1886 | V.H. Ernst | Milling Machine |
 | 359,943 | Mar. 22, 1887 | G.H. Smith | Attachment for Grinding Machines |
| | 384,613 | Jun. 19, 1888 | C.S. Farrar | Machine for sharpening saws, &c. |
| | 400,660 | Apr. 02, 1889 | H.C. Gilbert | Machine for grinding Shimer-molding bits, &c. |
