Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4643311 | Stackable long-term storage container, preferably for radioactive waste | Gunter Hohlein, Wilhelm Hempelmann, Rainer Koster, Fritz Meyer, Ulrich Pfeifer | 1987-02-17 |
| 4580694 | Sealing mechanism for a double-lid seal structure | Wilhelm Hempelmann | 1986-04-08 |