Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6412824 | Pipe branch fitting | — | 2002-07-02 |
| 6264251 | Segmented flange coupler for grooved pipe | Douglas R. Dole | 2001-07-24 |
| 5833214 | Plug valve with adjustable disc | — | 1998-11-10 |
| 4886304 | Abrasive grip pipe coupling | — | 1989-12-12 |
| 4561678 | Pipe coupling | — | 1985-12-31 |
| 4461498 | Coupling members for pipeline assemblies | — | 1984-07-24 |