Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6873699 | Network linkage type private branch exchange system and control method thereof | — | 2005-03-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6873699 | Network linkage type private branch exchange system and control method thereof | — | 2005-03-29 |