Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5586358 | Hand carriable vacuum cleaner with accessory attachment | Roy C. C. Ping | 1996-12-24 |
| 5524512 | Drywall screwdriver depth adjustment | — | 1996-06-11 |
| D368558 | Portable vacuum cleaner | Chung Chi Ping | 1996-04-02 |
| 4878405 | Collet lock for power tool | — | 1989-11-07 |
| 4351458 | Rotary thread spool storage tree | — | 1982-09-28 |