Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699838 | Apparatus for vacuum impregnation of a flexible, hollow tube | Joe V. Cihlar, Maurice P. G. Lubbock | 1997-12-23 |
| 5680885 | Method for rehabilitating pipe | — | 1997-10-28 |
| 5653555 | Multiple resin system for rehabilitating pipe | — | 1997-08-05 |