Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6364991 | Method and apparatus for curing the lining of a pipe | — | 2002-04-02 |
| 5954903 | Branched sewer re-lining | — | 1999-09-21 |
| 5167258 | Re-lining of sewers | — | 1992-12-01 |
| 4767236 | Sewer renovation by expanding a liner within the sewer and placing a new pipe within the expanded liner | — | 1988-08-30 |
| 4728223 | Methods of renovating sewers | — | 1988-03-01 |