Welding heavy duty drill pipes,申请号GB19970013007-传众专利搜索

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发明名称	Welding heavy duty drill pipes
摘要
申请公布号	GB2314519(A)	申请公布日期	1998.01.07
申请号	GB19970013007	申请日期	1997.06.19
申请人	* ING G KLEMM BOHRTECHNIK GMBH	发明人	ULRICH * KATOLLA
分类号	B23K33/00;B23K35/30;(IPC1-7):B23K33/00	主分类号	B23K33/00
代理机构		代理人
主权项
地址

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