Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6926025 | Shock actuated responsive mechanism with improved leveraged valve closing activation means for vertical fluid valve assemblies | Richard D. Sibley, William F. Keller | 2005-08-09 |
| 6527004 | Shock actuated responsive mechanism for vertical fluid valve assemblies | Richard B. Sibley, William F. Keller | 2003-03-04 |