Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876002 | Reverse osmosis water purificaiton unit | John D. Marshall | 1989-10-24 |
| 4839038 | Fluid strainer and flow corrector for fluid measurement device | — | 1989-06-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876002 | Reverse osmosis water purificaiton unit | John D. Marshall | 1989-10-24 |
| 4839038 | Fluid strainer and flow corrector for fluid measurement device | — | 1989-06-13 |