Hits:

School Sign:第一单位

Disigner of the Invention:周福宝,chenxiaoyu

Type of Patent:国内

State of Patent:专利授权

Application Number:201910339061.3

Number of Inventors:3

Service Invention or Not:no

Application Date:2019-04-25

Authorization Date:2020-07-10

First Author:李佳

Pre One:一种地铁受限空间人员通道防踩踏方法（欧洲） Next One:一种瓦斯抽放钻孔的二次封孔装置