Open floor grating and method of making the same,申请号US19450635035-传众专利搜索

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发明名称	Open floor grating and method of making the same
摘要
申请公布号	US2469070(A)	申请公布日期	1949.05.03
申请号	US19450635035	申请日期	1945.12.14
申请人	CARNEGIE-ILLINOIS STEEL CORPORATION	发明人	GREULICH GERALD G.
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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