Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5927989 | Four-pan algebra balance having an imbalance correction mechanism | Ken Vicchiollo | 1999-07-27 |
| D398549 | Four-pan algebra balance | Ken Vicchiollo | 1998-09-22 |
| 4961674 | Drill guide for precise drilling | Edward Wang | 1990-10-09 |