Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079129 | Installation-ready pipe coupling method of manufacture | Douglas R. Dole | 2011-12-20 |
| 8069547 | Installation-ready pipe coupling method of manufacture | Douglas R. Dole | 2011-12-06 |