Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6116817 | Hydrocarbon fuel piping system with a flexible inner pipe and an outer pipe | — | 2000-09-12 |
| 5775842 | Double containment under ground piping system | — | 1998-07-07 |
| 5590981 | Double-containment underground piping system | — | 1997-01-07 |
| 5567083 | Double-containment underground piping system | — | 1996-10-22 |
| 5553971 | Double-containment underground piping system | — | 1996-09-10 |
| 5098221 | Flexible double-containment piping system for underground storage tanks | — | 1992-03-24 |
| 5000335 | Cylindrical storage tank with vapor purging means | — | 1991-03-19 |