| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Grant Anti-Friction Ball Co. | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 365,407 | Jun. 28, 1887 | H. Richardson | Machinery for grinding spherical balls | grinders | |
| 517,004 | Mar. 20, 1894 | R.H. Grant | Automatic turning-machine | metal lathes | |
| 520,019 | May 15, 1894 | R.H. Grant | Grinding-machine | grinders | |