APPARATUS FOR TEMPORARILY CLOSING AN OPENING FORMED AT THE TOP OF VERTICAL WALLS OF A CATCH BASIN MANHOLE OR THE LIKE,申请号USD3621623-传众专利搜索

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发明名称	APPARATUS FOR TEMPORARILY CLOSING AN OPENING FORMED AT THE TOP OF VERTICAL WALLS OF A CATCH BASIN MANHOLE OR THE LIKE
摘要
申请公布号	US3621623(A)	申请公布日期	1971.11.23
申请号	USD3621623	申请日期	1970.03.23
申请人	ALLAN MACMILLAN DOWNES	发明人	ALLAN MACMILLAN DOWNES
分类号	E02D29/12;E02D29/14;(IPC1-7):B65D59/06	主分类号	E02D29/12
代理机构		代理人
主权项
地址

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