Precast sleeper construction,申请号US19530331364-传众专利搜索

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法人/股东/高管

发明名称	Precast sleeper construction
摘要
申请公布号	US2764888(A)	申请公布日期	1956.10.02
申请号	US19530331364	申请日期	1953.01.15
申请人	ROY OLSON CLARENCE LE	发明人	OLSON CLARENCE LE ROY
分类号	E04B5/36	主分类号	E04B5/36
代理机构		代理人
主权项
地址

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