Valve control apparatus,申请号US19350014657-传众专利搜索

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发明名称	Valve control apparatus
摘要
申请公布号	US2067622(A)	申请公布日期	1937.01.12
申请号	US19350014657	申请日期	1935.04.04
申请人	AIR REDUCTION COMPANY, INCORPORATED	发明人	SMITH DONALD L.
分类号	A62C4/02	主分类号	A62C4/02
代理机构		代理人
主权项
地址

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