Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858883 | Valve with flexible sheet member | — | 1989-08-22 |
| 4859422 | Analysis system | Humayun Qureshi, Stanley M. Liffmann, Theodore S. Geiselman | 1989-08-22 |
| 4852851 | Valve with flexible sheet member | — | 1989-08-01 |
| 4848722 | Valve with flexible sheet member | — | 1989-07-18 |