Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11603930 | Mechanical joint gasket with protrusions | — | 2023-03-14 |
| 9163760 | Pipe joint restraint apparatus | Sean Christian Schaefer | 2015-10-20 |
| 7341288 | Restrained sleeve pipe coupling | — | 2008-03-11 |
| 6173993 | Joint restraint | Dennis D. Shumard | 2001-01-16 |
| 6065784 | Pipe joint restraint ring with multiple inside radii | — | 2000-05-23 |
| 5544922 | Wedge assembly restraint | Dennis D. Shumard | 1996-08-13 |