CHEMICAL PREHEATER FOR OIL WELL DRILL,申请号AU19850044473-传众专利搜索

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发明名称	CHEMICAL PREHEATER FOR OIL WELL DRILL
摘要
申请公布号	AU4447385(A)	申请公布日期	1987.01.08
申请号	AU19850044473	申请日期	1985.07.02
申请人	HOT-HED, INC.	发明人	LOUIS J. WARDLAW
分类号	B23K9/02;B23K9/235;E21B33/04;E21B36/00;(IPC1-7):F24J1/00;B23K5/213;B23K11/34	主分类号	B23K9/02
代理机构		代理人
主权项
地址

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