Couvercles et châssis pour trou d'homme,申请号FRD819471-传众专利搜索

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发明名称	Couvercles et châssis pour trou d'homme
摘要
申请公布号	FR819471(A)	申请公布日期	1937.10.19
申请号	FRD819471	申请日期	1937.03.20
申请人		发明人	ELKINGTON VIVIAN
分类号	B66F19/00;E02D29/14	主分类号	B66F19/00
代理机构		代理人
主权项
地址

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