Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4381772 | Bioerodible diaphragm | Frank J. Keefer, Robert F. Keefer | 1983-05-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4381772 | Bioerodible diaphragm | Frank J. Keefer, Robert F. Keefer | 1983-05-03 |