Check valve device,申请号US19340752225-传众专利搜索

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发明名称	Check valve device
摘要
申请公布号	US2007677(A)	申请公布日期	1935.07.09
申请号	US19340752225	申请日期	1934.11.09
申请人	THE WESTINGHOUSE AIR BRAKE COMPANY	发明人	FARMER CLYDE C.
分类号	F16K15/02	主分类号	F16K15/02
代理机构		代理人
主权项
地址

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