| All Patents of Type: grinding wheels |
Patents 1 -
15
of 38
      |
| Number | Date | Patentee | Title | Type |
| 25,747 | Oct. 11, 1859 | T.J. Mayall | Improvement in methods of combining emery with caoutchouc | grinding wheels |
| 95,824 | Oct. 12, 1869 | E.C. Merrill, A.W. Willard | Improved composition for emery-wheels and other abrading-implements | grinding wheels |
| 113,439 | Apr. 04, 1871 | E.C. Merrill | Improvement in the manufacture of emery-wheels and artificial stone | grinding wheels |
| 163,025 | May 11, 1875 | S.G. Morrison | Improvement in emery-wheels | grinding wheels |
| 163,880 | Jun. 01, 1875 | S.G. Morrison | Improvement in modes of applying emery to metal surfaces | grinding wheels |
| 167,527 | Sep. 07, 1875 | G. Hart | Improvement in molds for forming artificial grindstones | grinding wheels |
| 172,337 | Jan. 18, 1876 | S.G. Morrison | Improvement in emery grinding-wheels | grinding wheels |
| 187,167 | Feb. 06, 1877 | F.B. Norton | Improvement in grinding and polishing surfaces and wheels | grinding wheels |
| CA-9,096 | Aug. 06, 1878 | G. Hart | Improvements on emery wheels | grinding wheels |
| 226,066 | Mar. 30, 1880 | G. Hart | Emery-wheel | grinding wheels |
| 227,402 | May 11, 1880 | J.F. Wood | Treatment of emery-wheels | grinding wheels |
| 275,561 | Apr. 10, 1883 | S.T. Wray | Polishing or buffing wheel | grinding wheels |
| 341,867 | May 18, 1886 | L.W. Andrews | Grinding-machine | grinding wheels |
| 467,252 | Jan. 19, 1892 | S.G. Hodges | Wheel | grinding wheels |
| 467,253 | Jan. 19, 1892 | S.G. Hodges | Wheel | grinding wheels |
