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周福宝

Patents

一种瓦斯抽采钻孔封孔装置及封孔方法

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Affilication of Author(s):安全工程学院

Disigner of the Invention:宋小林,石海涛,王维汉,liuchun,张云峰

Type of Patent:国内

State of Patent:专利授权

Application Number:201710205746.X

Number of Inventors:6

Service Invention or Not:no

Application Date:2017-03-31

Authorization Date:2019-06-21

First Author:周福宝