Railway track skate,申请号US19320646644-传众专利搜索

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发明名称	Railway track skate
摘要
申请公布号	US2002217(A)	申请公布日期	1935.05.21
申请号	US19320646644	申请日期	1932.12.10
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	BONE HERBERT L.
分类号	B61K7/00	主分类号	B61K7/00
代理机构		代理人
主权项
地址

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