| Patents for Union Stone Co. |
Patents 1 -
10
of 23
      |
| Picture | Number | Date | Patentee | Title |
| | 53,092 | Mar. 06, 1866 | S. Sorel | Material for making grinding wheels |
| | 100,944 | Mar. 15, 1870 | S. Sorrel | Material for making grinding wheels |
| | 100,945 | Mar. 15, 1870 | S. Sorrel | Material for making grinding wheels |
 | 102,218 | Apr. 26, 1870 | H. Brown | Improvement in oil-stone holders |
 | 107,017 | Sep. 06, 1870 | J.S. Elliott | Improved brick-machine |
 | 110,023 | Dec. 13, 1870 | J.S. Elliott | Improvement in machines for mixing the materials to form artificial stone, &c. |
| | 110,102 | Dec. 13, 1870 | J.F. Wood | Improvement in the manufacture of emery-wheels |
 | 111,921 | Feb. 21, 1871 | J.S. Elliott | Improvement in machines for forming artificial stone |
| | 124,557 | Mar. 12, 1872 | J.S. Elliott, J.F. Wood | Improvement in the manufacture of imitation marble |
| | 124,558 | Mar. 12, 1872 | J.S. Elliott, J.F. Wood | Improvement in the manufacture of millstones |
