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周忠宁

Patents

用于煤矿立风井防爆门的液压反风锁扣装置

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Disigner of the Invention:卞庆飞,张昕喆,马丽娜,zhouzhongning,于瑞红,陈聪

Type of Patent:国际

State of Patent:专利授权

Application Number:201320650458.2

Number of Inventors:7

Service Invention or Not:no

Application Date:2013-10-21

Authorization Date:2014-05-21

First Author:刘聪