RAILWAY CROSSING SIGNAL,申请号CAD380757-传众专利搜索

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发明名称	RAILWAY CROSSING SIGNAL
摘要
申请公布号	CA380757(A)	申请公布日期	1939.04.18
申请号	CAD380757	申请日期
申请人	DANIEL ROBERT CAMERON	发明人	DANIEL ROBERT CAMERON
分类号		主分类号
代理机构		代理人
主权项
地址

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