Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6786517 | Concentric pipe joint restraint | — | 2004-09-07 |
| 6173993 | Joint restraint | Michael L. Lundstrom | 2001-01-16 |
| 5544922 | Wedge assembly restraint | Michael L. Lundstrom | 1996-08-13 |
| 4896903 | Segmented pipe joint retainer glands | — | 1990-01-30 |
| 4779900 | Segmented pipe joint retainer glands | — | 1988-10-25 |