CONCRETE ROAD JOINT,申请号CAD419770-传众专利搜索

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发明名称	CONCRETE ROAD JOINT
摘要
申请公布号	CA419770(A)	申请公布日期	1944.04.25
申请号	CAD419770	申请日期
申请人	JOHN N. HELTZEL	发明人	JOHN N. HELTZEL
分类号		主分类号
代理机构		代理人
主权项
地址

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