| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1831-11-02 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 6,819X | Nov. 02, 1831 | W. Brown | Tanning apparatus removing the bark from the letches by means of water | ||
| 6,820X | Nov. 02, 1831 | E. Burgonzio | Tricylindric machine operating by water fall | ||
| 6,821X | Nov. 02, 1831 | S. Krauser | Wheels for railroad cars to prevent friction | ||