Verfahren und Vorrichtung zur Herstellung einer gesinterten Diamantbohrkrone,申请号AT19670000108-传众专利搜索

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发明名称	Verfahren und Vorrichtung zur Herstellung einer gesinterten Diamantbohrkrone
摘要
申请公布号	AT271349(B)	申请公布日期	1969.05.27
申请号	AT19670000108	申请日期	1967.01.04
申请人	SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N. V.	发明人
分类号	E21B	主分类号	E21B
代理机构		代理人
主权项
地址

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