| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for William Pirsson | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 52,444 | Feb. 06, 1866 | W. Pirsson | Improvement in Ratchet-Wrenches | ratchet wrenches | |
| 55,157 | May 29, 1866 | W. Pirsson | Improvement in Ratchet-Wrenches | ratchet wrenches | |
| 261,758 | Jul. 25, 1882 | W. Pirsson | Improvement in Ratchet Drills and Wrenches | ratchet wrenches | |