Railway switch,申请号US19310546000-传众专利搜索

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发明名称	Railway switch
摘要
申请公布号	US2093643(A)	申请公布日期	1937.09.21
申请号	US19310546000	申请日期	1931.06.22
申请人	POLLOPAS PATENTS LIMITED	发明人	MONTROSE-OSTER LOUIS-EUGENE-WIDOLT
分类号	B61L11/00	主分类号	B61L11/00
代理机构		代理人
主权项
地址

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