| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1821-02-20 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 3,298X | Feb. 20, 1821 | W. Gould | Foot gin for cleaning cotton | cotton gins | |
| 3,299X | Feb. 20, 1821 | T. Blake | Lever press | lever presses | |
| 3,300X | Feb. 20, 1821 | Z. Carey (Cary) | Machine for shearing cloth | splitting and shearing machinery | |