| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Frank W. Ofeldt | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 356,419 | Jan. 18, 1887 | F.W. Ofeldt | Gas Engine | gas and gasoline engines | |
| 538,694 | May 07, 1895 | F.W. Ofeldt | Vapor Engine | internal combustion engines | |
| 540,757 | Jun. 11, 1895 | F.W. Ofeldt | Vapor Engine | internal combustion engines | |