Open floor grating,申请号US19600078485-传众专利搜索

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发明名称	Open floor grating
摘要
申请公布号	US3109349(A)	申请公布日期	1963.11.05
申请号	US19600078485	申请日期	1960.12.27
申请人	UNITED STATES STEEL CORPORATION	发明人	LORIG EDWIN T.
分类号	E04C2/42	主分类号	E04C2/42
代理机构		代理人
主权项
地址

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