Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699154 | Method and apparatus for installing pipes | Mohammed Aziz | 1997-12-16 |
| 5673469 | Method of installing a plastic pipe into an existing steel service pipe | Colin Cochrane | 1997-10-07 |