Suspended railway switch,申请号US19310516463-传众专利搜索

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发明名称	Suspended railway switch
摘要
申请公布号	US1903386(A)	申请公布日期	1933.04.04
申请号	US19310516463	申请日期	1931.02.17
申请人	FRANK S. LYON	发明人	FISH GILBERT D.
分类号	E01B25/26	主分类号	E01B25/26
代理机构		代理人
主权项
地址

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