Return flow check and plug valve,申请号US19360061568-传众专利搜索

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发明名称	Return flow check and plug valve
摘要
申请公布号	US2151098(A)	申请公布日期	1939.03.21
申请号	US19360061568	申请日期	1936.01.30
申请人	GREENWOOD DOLPHICE H	发明人	GREENWOOD DOLPHICE H.
分类号	F16K15/18	主分类号	F16K15/18
代理机构		代理人
主权项
地址

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