Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6892220 | Apparatus and method for creating a link and checking link validity for objects by storing a timestamp in a validity check field for linking to a multimedia document | Sang Hoon Seol, Chul Hee Kang | 2005-05-10 |