Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6751407 | Camera film cassette assembly apparatus and method | Roland Walter Kohl | 2004-06-15 |
| 6522835 | Photographic film package with detachable cartridge | Bangly K. W. So, Roland Walter Kohl | 2003-02-18 |