Spacing and locking device for roof arch centers,申请号US19610086687-传众专利搜索

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发明名称	Spacing and locking device for roof arch centers
摘要
申请公布号	US3131790(A)	申请公布日期	1964.05.05
申请号	US19610086687	申请日期	1961.02.02
申请人	REIGHART JUNE H;MCVEY EMMETT E;OPRE JAMES H	发明人	REIGHART JUNE H.;MCVEY EMMETT E.;OPRE JAMES H.
分类号	E04G21/18	主分类号	E04G21/18
代理机构		代理人
主权项
地址

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