Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4334826 | Surface aerator impeller | David E. Gibson, Edward L. Heimark, Jerome B. Quinn, Richard E. Speechley, Richard L. Winter | 1982-06-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4334826 | Surface aerator impeller | David E. Gibson, Edward L. Heimark, Jerome B. Quinn, Richard E. Speechley, Richard L. Winter | 1982-06-15 |