Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812407 | Membrane, system and process for testing substance diffusion through the membrane and method for making the membrane | Stephan Buchmann, Hans Leuenberger | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812407 | Membrane, system and process for testing substance diffusion through the membrane and method for making the membrane | Stephan Buchmann, Hans Leuenberger | 1989-03-14 |