DRILLING ASSEMBLY,申请号PL19970323162-传众专利搜索

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发明名称	DRILLING ASSEMBLY
摘要
申请公布号	PL323162(A1)	申请公布日期	1999.05.24
申请号	PL19970323162	申请日期	1997.11.13
申请人	SZELER JERZY;WITTEK WIESLAW;MACIEJEWSKI STEFAN	发明人	SZELER JERZY;WITTEK WIESLAW;MACIEJEWSKI STEFAN
分类号	(IPC1-7):E21C5/11	主分类号	(IPC1-7):E21C5/11
代理机构		代理人
主权项
地址

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