,申请号NO19670168631-传众专利搜索

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发明名称
摘要
申请公布号	NO118966(B)	申请公布日期	1970.03.09
申请号	NO19670168631	申请日期	1967.06.17
申请人	DARDA H	发明人	DARDA H
分类号	E21C37/02;E21C37/04	主分类号	E21C37/02
代理机构		代理人
主权项
地址

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