Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322581 | Join in the overlapped zone of needle punched bentonite sealing sheets | Georg Heerten | 1994-06-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322581 | Join in the overlapped zone of needle punched bentonite sealing sheets | Georg Heerten | 1994-06-21 |