Valve device for delivery of gases at need,申请号GB19370008814-传众专利搜索

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发明名称	Valve device for delivery of gases at need
摘要
申请公布号	GB476848(A)	申请公布日期	1937.12.16
申请号	GB19370008814	申请日期	1937.03.25
申请人	OTTO HEINRICH DRAEGER	发明人
分类号	F16K41/12	主分类号	F16K41/12
代理机构		代理人
主权项
地址

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