Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840758 | Leadless free-cutting copper alloy and method for producing the same | Beum Jae Lee, Cheol Min Park, Young Re Cho, Min Jae Jeong | 2017-12-12 |
| 8533929 | Coin assembly and medal assembly, and method for fabricating the same | Jong Soo Yuem | 2013-09-17 |
| 6189197 | Method for producing a bimetallic coin | — | 2001-02-20 |
| 5996262 | Bimetallic coin and method for producing the same | — | 1999-12-07 |