Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5887248 | Audible tone signal service apparatus and method of a digital mobile services switching center | Chul Ho JANG | 1999-03-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5887248 | Audible tone signal service apparatus and method of a digital mobile services switching center | Chul Ho JANG | 1999-03-23 |