Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6022054 | Thin wall fiberglass pipe connectors | Joie L. Folkers | 2000-02-08 |
| 5725920 | Fiber-reinforced resin pipe having improved impact resistance | Ralph Friedrich, Joie L. Folkers, Brian M. Francis, Gordon G. Robertson | 1998-03-10 |