LOCKDOWN MECHANISM FOR WELLHEAD CONNECTOR,申请号SG19850000207-传众专利搜索

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发明名称	LOCKDOWN MECHANISM FOR WELLHEAD CONNECTOR
摘要
申请公布号	SG20785(G)	申请公布日期	1985.09.13
申请号	SG19850000207	申请日期	1985.03.21
申请人	NORMAN ALLEN NELSON	发明人
分类号	E21B33/038;F16L37/00;(IPC1-7):F16L37/12	主分类号	E21B33/038
代理机构		代理人
主权项
地址

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