Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7940909 | Method and system for rewarding ring back tone, donor platform, and custom ring back tone platform | — | 2011-05-10 |
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Yongfu Yan
Overall (2011): #121,087 of 364,097Top 35%
1
Patents 2011