| All Patents of Type: grinding wheels |
Patents 1 -
10
of 38
      |
| Picture | Number | Date | Patentee | Title |
| | 25,747 | Oct. 11, 1859 | T.J. Mayall | Improvement in methods of combining emery with caoutchouc |
| | 95,824 | Oct. 12, 1869 | E.C. Merrill, A.W. Willard | Improved composition for emery-wheels and other abrading-implements |
| | 113,439 | Apr. 04, 1871 | E.C. Merrill | Improvement in the manufacture of emery-wheels and artificial stone |
 | 163,025 | May 11, 1875 | S.G. Morrison | Improvement in emery-wheels |
 | 163,880 | Jun. 01, 1875 | S.G. Morrison | Improvement in modes of applying emery to metal surfaces |
 | 167,527 | Sep. 07, 1875 | G. Hart | Improvement in molds for forming artificial grindstones |
 | 172,337 | Jan. 18, 1876 | S.G. Morrison | Improvement in emery grinding-wheels |
 | 187,167 | Feb. 06, 1877 | F.B. Norton | Improvement in grinding and polishing surfaces and wheels |
| | CA-9,096 | Aug. 06, 1878 | G. Hart | Improvements on emery wheels |
 | 226,066 | Mar. 30, 1880 | G. Hart | Emery-wheel |
