Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349991 | Closing device for large passages in a prestressed pressure vessel | Josef Schoening | 1982-09-21 |
| 4311558 | Pressure vessel for a nuclear power plant | Josef Schoening | 1982-01-19 |