笔筒（叶脉）
Release time:2024-08-09
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- Affilication of Author(s):
- 冶金工程学院
- Scope of patent:
- 国内
- Disigner of the Invention:
- 刘力菁,翟培羽,胡天乐,叶思雨,侯思佳,王宇轩,安思宇
- Type of Patent:
- Appearance design
- State of Patent:
- 专利授权
- Application Number:
- 2020306567708
- Service Invention or Not:
- yes
- Application Date:
- 2020-11-02
- Authorization Date:
- 2021-03-16
- First Author:
- liqian
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