Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5052851 | Emergency maintenance hole cover, and method of installation | — | 1991-10-01 |
| 4254341 | Radiation protection device, particularly for medical X-ray, radiation therapy and diagnostic use | Marianne Herr | 1981-03-03 |