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一种煤层瓦斯压力测定仪
- Release time:2020-10-30
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Disigner of the Invention:
shaohao,王凯,wuzhengyan,mengyanNote:
邵昊,王凯,吴征艳,孟燕Type of Patent:
国际State of Patent:
专利撤回Application Number:
200820161113.XAuthorization number:
CN 20127706YNumber of Inventors:
5Service Invention or Not:
noApplication Date:
2008-10-18Authorization Date:
2009-07-22First Author:
jiangshuguang
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