Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D629079 | Pipe coupling segment | Douglas R. Dole | 2010-12-14 |
| D629078 | Pipe coupling | Douglas R. Dole | 2010-12-14 |
| D629080 | Pipe coupling | Douglas R. Dole | 2010-12-14 |
| D628680 | Pipe coupling | Douglas R. Dole | 2010-12-07 |