Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6279991 | Folding mechanism with kick-out tab for folding chair | Dale Spendlove | 2001-08-28 |
| 4987013 | Process for lining pipe | Don E. Gray, George H. Styles | 1991-01-22 |
| 4913089 | Concrete injector pump and process for lining pipe | Don E. Gray, George H. Styles | 1990-04-03 |