Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6746022 | Chuck for holding a workpiece | Yiu Ming Cheung | 2004-06-08 |
| D274048 | Electronic alarm | Albert Au | 1984-05-29 |
| D272992 | Electronic intrusion alarm transmitter | Albert Au | 1984-03-13 |
| D272534 | Family pager receiver device or similar article | Albert Au | 1984-02-07 |
| D272443 | Family pager transmitter device or similar article | Albert Au | 1984-01-31 |