Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812236 | Metal microfilter | — | 1989-03-14 |
| 4801379 | Microfilter foil and method of producing same | Thomas Ruegg | 1989-01-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812236 | Metal microfilter | — | 1989-03-14 |
| 4801379 | Microfilter foil and method of producing same | Thomas Ruegg | 1989-01-31 |