Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10156382 | Heat trap | — | 2018-12-18 |
| 7270087 | Heat trap | David P. Passerell, Joseph C. Passerell, Michael C. Passerell, Jason D. Passerell | 2007-09-18 |
| 6892753 | Structure for converting a mechanical joint to a fusion joint | Dave Robison, Jason Knaus | 2005-05-17 |
| 6371525 | Gas riser with free rotating plastic riser casing | Dave Robison | 2002-04-16 |
| 6142538 | Stab-type coupling with conduit inner diameter seal | Frank R. Volgstadt, James Lorenz | 2000-11-07 |