Automatic shut-off valve device,申请号US19380224852-传众专利搜索

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发明名称	Automatic shut-off valve device
摘要
申请公布号	US2266930(A)	申请公布日期	1941.12.23
申请号	US19380224852	申请日期	1938.08.15
申请人	WATSON ORVILLE C	发明人	WATSON ORVILLE C.
分类号	F16K17/20	主分类号	F16K17/20
代理机构		代理人
主权项
地址

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