Electric control system,申请号US19320628163-传众专利搜索

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发明名称	Electric control system
摘要
申请公布号	US1940736(A)	申请公布日期	1933.12.26
申请号	US19320628163	申请日期	1932.08.10
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	SORENSEN ANDREW J.
分类号	B61L3/22	主分类号	B61L3/22
代理机构		代理人
主权项
地址

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