Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808309 | Variable length membrane module | Richard F. Beaupre, Martin D. Hilmar | 1989-02-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808309 | Variable length membrane module | Richard F. Beaupre, Martin D. Hilmar | 1989-02-28 |