| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for E. C. Rowland | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 295,454 | Mar. 18, 1884 | F.J. Sprague | Electro Dynamic Motor | electric motors | |
| 335,781 | Feb. 09, 1886 | F.J. Sprague | Electric Dynamic Motor | DC motors | |