Manhole and method of manufacture,申请号US05/760252-传众专利搜索

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发明名称	Manhole and method of manufacture
摘要
申请公布号	USRE29636(E1)	申请公布日期	1978.05.23
申请号	US05/760252	申请日期	1977.01.17
申请人		发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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