Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4263932 | Accurate dosing of regenerating fluid to processing-fluid-tank in film developing machine | Erwin Laar, Werner Sieber | 1981-04-28 |
| 4215719 | Intermixing of fluid in plural tanks while maintaining the fluid levels in the tanks independent | Erwin Laar, Werner Sieber | 1980-08-05 |