| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Donald H. Stewart | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,351,998 | Sep. 07, 1920 | W.F. Folmer | Photographic Film Sheath | film and plate holders | |
| 1,441,146 | Jan. 02, 1923 | G. Eastman | Roll-film Cartridge | roll film | |