Adapter for access units of underfloor ducts,申请号US19610151470-传众专利搜索

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发明名称	Adapter for access units of underfloor ducts
摘要
申请公布号	US3199713(A)	申请公布日期	1965.08.10
申请号	US19610151470	申请日期	1961.11.10
申请人	WALKER BROTHERS	发明人	FLACHBARTH CHARLES T.
分类号	E04F19/08	主分类号	E04F19/08
代理机构		代理人
主权项
地址

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