METHOD OF UNDERWATER GROUND DEVELOPMENT,申请号SU19884622143-传众专利搜索

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发明名称	METHOD OF UNDERWATER GROUND DEVELOPMENT
摘要
申请公布号	SU1721249(A1)	申请公布日期	1992.03.23
申请号	SU19884622143	申请日期	1988.12.20
申请人	PROIZV OB "ESTONFOSFORIT"	发明人	BYCHEK NIKOLAJ D,SU
分类号	E21C50/00	主分类号	E21C50/00
代理机构		代理人
主权项
地址

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