Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692543 | Lining of lateral pipelines with a liner having a sealing collar | — | 1997-12-02 |
| 5656117 | Method of lining passageways by applying a pre-liner sleeve and hardenable composition | Miranda Jane Bull, executor | 1997-08-12 |
| 5624629 | Installation of lateral linings with sealing collar from the main pipeline out | — | 1997-04-29 |