Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061934 | Method and installation for the subterranean support of underground conduits | Robert J. Wegener | 2011-11-22 |
| 8016518 | Sheet pile for the subterranean support of underground conduits | Robert J. Wegener | 2011-09-13 |