| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1831-04-12 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 6,471X | Apr. 12, 1831 | M. Coney | Water wheel | water wheels | |
| 6,472X | Apr. 12, 1831 | L. Hayward | Smut machine | miller | |
| 6,473X | Apr. 12, 1831 | W. Mead | Mineral water | ||