Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5151167 | Coins coated with nickel, copper and nickel and process for making such coins | Hieu Truong | 1992-09-29 |
| 5139886 | Coins coated with nickel, copper and nickel | Hieu Truong | 1992-08-18 |