Switch control and indication system,申请号US19390256325-传众专利搜索

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发明名称	Switch control and indication system
摘要
申请公布号	US2224420(A)	申请公布日期	1940.12.10
申请号	US19390256325	申请日期	1939.02.14
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	YOUNG HENRY S.
分类号	B61L5/06;B61L19/06	主分类号	B61L5/06
代理机构		代理人
主权项
地址

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