Auxiliary check valve,申请号US19270189477-传众专利搜索

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发明名称	Auxiliary check valve
摘要
申请公布号	US1787947(A)	申请公布日期	1931.01.06
申请号	US19270189477	申请日期	1927.05.07
申请人	LEHNERT HENRY W A	发明人	LEHNERT HENRY W. A.
分类号	F16K43/00	主分类号	F16K43/00
代理机构		代理人
主权项
地址

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