Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6631830 | Snap action ball valve assembly and liquid dispenser using same | Chor-Ming Ma, Jeffrey Zimmerman | 2003-10-14 |
| 6345732 | Water gun with removable pre-pressurizable cartridge | Jeffrey Zimmerman | 2002-02-12 |