Gravity flow control,申请号US19330702567-传众专利搜索

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发明名称	Gravity flow control
摘要
申请公布号	US2009711(A)	申请公布日期	1935.07.30
申请号	US19330702567	申请日期	1933.12.15
申请人	STANDARD OIL DEVELOPMENT COMPANY	发明人	MATEER GEORGE L.
分类号	G05D7/01	主分类号	G05D7/01
代理机构		代理人
主权项
地址

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