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| Patents for John F. Herrmann | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,145,892 | Aug. 25, 1964 | J.F. Herrmann | Film Advancing Mechanism for Photographic Projectors | ||
| 3,180,207 | Apr. 27, 1965 | J.F. Herrmann | Viewing Device for Microfilm Strip | ||