Circular street manhole cover,申请号GB19600041329-传众专利搜索

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发明名称	Circular street manhole cover
摘要
申请公布号	GB966862(A)	申请公布日期	1964.08.19
申请号	GB19600041329	申请日期	1960.12.01
申请人	LARS BIRGER LINDH	发明人
分类号	E02D29/14	主分类号	E02D29/14
代理机构		代理人
主权项
地址

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