Air-inflated drilling rig cover,申请号US19570676271-传众专利搜索

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发明名称	Air-inflated drilling rig cover
摘要
申请公布号	US2872933(A)	申请公布日期	1959.02.10
申请号	US19570676271	申请日期	1957.08.05
申请人	CID AIR STRUCTURES COMPANY	发明人	MACKEY WILLIAM H.
分类号	E04H15/22;E21B15/00	主分类号	E04H15/22
代理机构		代理人
主权项
地址

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