METHOD OF INVESTIGATION OF ROCK MASS,申请号PL19790214609-传众专利搜索

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发明名称	METHOD OF INVESTIGATION OF ROCK MASS
摘要
申请公布号	PL130319(B1)	申请公布日期	1984.07.31
申请号	PL19790214609	申请日期	1979.03.13
申请人		发明人
分类号	E21C39/00;G01V;G01V1/00;(IPC1-7):G01V1/00	主分类号	E21C39/00
代理机构		代理人
主权项
地址

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