| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for John F. Herrmann | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 3,145,892 | Aug. 25, 1964 | J.F. Herrmann | Film Advancing Mechanism for Photographic Projectors | projectors | |
| 3,180,207 | Apr. 27, 1965 | J.F. Herrmann | Viewing Device for Microfilm Strip | microfilm viewers | |