Control valve device,申请号US19430504702-传众专利搜索

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发明名称	Control valve device
摘要
申请公布号	US2355758(A)	申请公布日期	1944.08.15
申请号	US19430504702	申请日期	1943.10.02
申请人	THE WESTINGHOUSE AIR BRAKE COMPANY	发明人	STEVENS ROY R.
分类号	F16K31/524	主分类号	F16K31/524
代理机构		代理人
主权项
地址

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