Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638152 | Diamond blade having segment type cutting tip for use in cutting, grinding or drilling apparatus | So Young Yoon, Chang-Hyun Lee | 2003-10-28 |
| 6626167 | Diamond tool | So Young Yoon, Jong Ho Kim | 2003-09-30 |