Means for stopping the flow of fluids under pressure,申请号US19310509755-传众专利搜索

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发明名称	Means for stopping the flow of fluids under pressure
摘要
申请公布号	US1970964(A)	申请公布日期	1934.08.21
申请号	US19310509755	申请日期	1931.01.19
申请人	HOSMER CHESTER C	发明人	HOSMER CHESTER C.
分类号	E21B34/04;F16K3/18	主分类号	E21B34/04
代理机构		代理人
主权项
地址

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