Bookstack and analogous structure,申请号US19310564545-传众专利搜索

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发明名称	Bookstack and analogous structure
摘要
申请公布号	US1978174(A)	申请公布日期	1934.10.23
申请号	US19310564545	申请日期	1931.09.23
申请人	ART METAL CONSTRUCTION COMPANY	发明人	SKAR JOHN G. L.;JOHNSON CARL A.
分类号	E04H5/02	主分类号	E04H5/02
代理机构		代理人
主权项
地址

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