Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8646165 | Method of securing pipe elements end to end | John Gibb, Douglas R. Dole | 2014-02-11 |
| 8424918 | Deformable mechanical pipe coupling with shoulder pipe elements | John Gibb, Douglas R. Dole | 2013-04-23 |
| 7712796 | Deformable mechanical pipe coupling | John Gibb, Douglas R. Dole | 2010-05-11 |
| 7591055 | Method of securing facing end portions of pipe elements | John Gibb, Douglas R. Dole | 2009-09-22 |
| 7341287 | Deformable mechanical pipe coupling | John Gibb, Douglas R. Dole | 2008-03-11 |
| 7086131 | Deformable mechanical pipe coupling | John Gibb, Douglas R. Dole | 2006-08-08 |
| 5148633 | Tool for resurfacing exhaust port flanges | Woodruff J. Kozlow | 1992-09-22 |