Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866099 | Membrane | — | 1989-09-12 |
| 4820419 | Membranes | John W. Smith | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866099 | Membrane | — | 1989-09-12 |
| 4820419 | Membranes | John W. Smith | 1989-04-11 |