Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6880586 | Collar with integral vent for fuel filler pipe | Allen G. Crowley, David Chen | 2005-04-19 |
| 6666238 | Collar for fuel filler pipe | Allen G. Crowley, David Chen | 2003-12-23 |