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矿山井下灾害无电光纤维振动呼救装置
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Affilication of Author(s):控制科学与工程学院
Patent Applicant:jiangqi
Type of Patent:实用新型
Application Number:200820022115.0
Number of Inventors:1
Service Invention or Not:no
Application Date:2008-05-09
Publication Date:2009-03-04
Authorization Date:2009-03-04
Publication Date:2009-03-04
Application Date:2008-05-09
Authorization Date:2009-03-04
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