Patents
Release time: 2022-08-25Hits:
- Type of Patent:Invent
- State of Patent:Authorized patents
- Application Number:ZL201210254878.9
- Authorization number:ZL201210254878.9
- Service Invention or Not:no
- Application Date:2012-07-30
- Authorization Date:2014-12-03
- Pre One:一种基于增强现实技术的钢琴辅助学习系统.
MOBILE Version