| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1813-08-20 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,987X | Aug. 20, 1813 | E. Stowell | Machine called the cylindrick polisher | ||
| 1,988X | Aug. 20, 1813 | I. Ives, D. Carrington | Twining comb machine | ||
| 1,989X | Aug. 20, 1813 | W. Foster, Jr. | Improvement in the lamp, consisting of a double reflector to one blaze | ||