一种移动式地理围栏的信息推送系统及其方法（郭迟，崔竞松，董红波，方媛-ZL 201410325077.6）
Date:2019-03-18
Hits:
- Patent desc:
- 专利发明人：郭迟，崔竞松，董红波，方媛
- Type of Patent:
- Invent
- State of Patent:
- Authorized patents
- Authorization number:
- ZL 201410325077.6
- Service Invention or Not:
- no
- Authorization Date:
- 2017-07-11