一种呼吸频率自适应的防尘口罩
- Disigner of the Invention:郭庆,王振峰,石晶泰,赵乾坤
- Type of Patent:国际
- State of Patent:专利授权
- Application Number:201720764531.7
- Number of Inventors:5
- Service Invention or Not:no
- Application Date:2017-06-28
- Authorization Date:2018-02-13
- First Author:renwanxing
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