| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for D. O. Barnell | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 706,095 | Aug. 05, 1902 | E. Oehrle | Combination Square and Protractor | |
 | 798,695 | Sep. 05, 1905 | E. Oehrle | Combination Square and Protractor | |
 | 820,311 | May 08, 1906 | E. Oehrle | Square and Level | |