Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609439 | Method of and apparatus for repairing and sealing junctions between mains and branch pipes | Hermann Suerbaum | 1997-03-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609439 | Method of and apparatus for repairing and sealing junctions between mains and branch pipes | Hermann Suerbaum | 1997-03-11 |