Railway switch apparatus,申请号US19300486425-传众专利搜索

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发明名称	Railway switch apparatus
摘要
申请公布号	US1814323(A)	申请公布日期	1931.07.14
申请号	US19300486425	申请日期	1930.10.04
申请人	MCGARRY JOHN T	发明人	MCGARRY JOHN T.
分类号	B61L5/02	主分类号	B61L5/02
代理机构		代理人
主权项
地址

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