Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848963 | Earth pressure shield | Siegmund Babendererde, Hans-Jurgen Flunker, Otto Braach | 1989-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848963 | Earth pressure shield | Siegmund Babendererde, Hans-Jurgen Flunker, Otto Braach | 1989-07-18 |