Electromagnetic devices for controlling fluid pressure,申请号US19520306995-传众专利搜索

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发明名称	Electromagnetic devices for controlling fluid pressure
摘要
申请公布号	US2775254(A)	申请公布日期	1956.12.25
申请号	US19520306995	申请日期	1952.08.29
申请人	BRITISH MESSIER LIMITED	发明人	STANBURY JOHN HERBERT
分类号	E21B1/28;G05D16/18	主分类号	E21B1/28
代理机构		代理人
主权项
地址

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