ROADBED FOR RAILWAYS,申请号CAD316024-传众专利搜索

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发明名称	ROADBED FOR RAILWAYS
摘要
申请公布号	CA316024(A)	申请公布日期	1931.10.13
申请号	CAD316024	申请日期
申请人	WILLIAM P. DAY	发明人	WILLIAM P. DAY
分类号		主分类号
代理机构		代理人
主权项
地址

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