Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10475355 | Method of providing markings to precious stones including gemstones and diamonds, and markings and marked precious stones marked according to such a method | Koon Chung HUI, Wing Chi TANG | 2019-11-12 |