Improvements in valves,申请号GB19310022146-传众专利搜索

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发明名称	Improvements in valves
摘要
申请公布号	GB392138(A)	申请公布日期	1933.05.11
申请号	GB19310022146	申请日期	1931.08.04
申请人	MICHELIN & CIE	发明人
分类号	B60C29/04	主分类号	B60C29/04
代理机构		代理人
主权项
地址

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