Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5452853 | Method and apparatus for spraying grout onto the interior surface of an enclosed elongated cavity | William E. Shook, Danny C. Jury | 1995-09-26 |
| 5032197 | Cast-in-place manhole liner method | — | 1991-07-16 |
| 5017313 | Method and means for repairing existing manhole | — | 1991-05-21 |
| 4997602 | Cast-in-place manhole liner method | — | 1991-03-05 |
| 4995584 | Cast-in-place manhole liner apparatus | — | 1991-02-26 |