Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828693 | Water pressure regulator for hemodialysis apparatus | Edward R. Lindsay, James D. Aid | 1989-05-09 |
| 4827430 | Flow measurement system | James D. Aid, Thomas P. Hartranft | 1989-05-02 |