WELLHEAD SEAL ASSEMBLY,申请号AU19880010086-传众专利搜索

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发明名称	WELLHEAD SEAL ASSEMBLY
摘要
申请公布号	AU591827(B2)	申请公布日期	1989.12.14
申请号	AU19880010086	申请日期	1988.01.06
申请人	CAMERON IRON WORKS USA INC.	发明人	THOMAS G. CASSITY
分类号	E21D9/14;E21B33/00;E21B33/04;(IPC1-7):E21B33/03	主分类号	E21D9/14
代理机构		代理人
主权项
地址

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