一种毽球发球电动机械.
Release time:2024-08-19
Hits:
- Affilication of Author(s):
- 体育学院
- Type of Patent:
- 发明专利
- Service Invention or Not:
- no
- Application Date:
- 2021-09-09
- Authorization Date:
- 2022-05-17
- First Author:
- ZWY
- Pre One:一种计数毽球