| Patents for Union Stone Co. |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 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 | sharpening jigs and fixtures |
| 107,017 | Sep. 06, 1870 | J.S. Elliott | Improved brick-machine | manufacturing bricks and tiles |
| 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 | |
| 124,559 | Mar. 12, 1872 | J.S. Elliott, J.F. Wood | Improvement in processes of repairing millstones | |
| 125,385 | Apr. 09, 1872 | J. Elliott, J.F. Wood | Improvement in composition-stones for smut-machines | |
| 125,390 | Apr. 09, 1872 | J.A. Henshaw | Improvement in cements for artificial stones | |
| 126,041 | Apr. 23, 1872 | J.S. Elliott, J.F. Wood | Method of making stone for grinding wood-pulp | |
| 126,042 | Apr. 23, 1872 | J.S. Elliott, J.F. Wood | Improvement in composition-stone frames for hot-air registers | |
