Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419384 | Drinking vessel with indicator activated by inertial switch | Raymond W. K. Leung | 2002-07-16 |
| 6420008 | Display sticker with integral flasher circuit and power source | Raymond W. K. Leung | 2002-07-16 |