Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6935152 | Orbiting roller groover for pipe | Douglas R. Dole | 2005-08-30 |
| 6918278 | Pipe preparation tool adaptable for different diameter pipes | Douglas R. Dole | 2005-07-19 |
| 6913292 | Mechanical pipe coupling derived from a standard fitting | Charles E. Wilk, Jr., Lawrence W. Thau, Jr., Douglas R. Dole, Terrance M. Carom | 2005-07-05 |