Railroad rail joint,申请号US19440564215-传众专利搜索

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发明名称	Railroad rail joint
摘要
申请公布号	US2433095(A)	申请公布日期	1947.12.23
申请号	US19440564215	申请日期	1944.11.20
申请人	CUPERKA JOSEPH L	发明人	CUPERKA JOSEPH L.
分类号	E01B11/10	主分类号	E01B11/10
代理机构		代理人
主权项
地址

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