| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1828-02-20 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 5,009X | Feb. 20, 1828 | J. Torrey | Water wheel | water wheels | |
| 5,010X | Feb. 20, 1828 | J. Richards | Hammer for cutting and dressing stone | stonemason | |