Time-controlled switch,申请号US19290417139-传众专利搜索

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发明名称	Time-controlled switch
摘要
申请公布号	US1797079(A)	申请公布日期	1931.03.17
申请号	US19290417139	申请日期	1929.12.28
申请人	ECONOMOS JOHN N	发明人	ECONOMOS JOHN N.
分类号	G04C23/16	主分类号	G04C23/16
代理机构		代理人
主权项
地址

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