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发明名称	Bohrdruckmesser
摘要
申请公布号	DE834840(C)	申请公布日期	1952.03.24
申请号	DE1944G000523	申请日期	1944.12.09
申请人	GESELLSCHAFT FUER NAUTISCHE UND TIEFBOHRTECHNISCHE INSTRUMENTE M.B.H.;DR. OSCAR MARTIENSSEN	发明人	MARTIENSSEN DR. OSCAR
分类号	E21B19/08;E21B44/00;E21B45/00	主分类号	E21B19/08
代理机构		代理人
主权项
地址

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