Long-distance signaling device working with current-impulse combination,申请号US19290348690-传众专利搜索

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发明名称	Long-distance signaling device working with current-impulse combination
摘要
申请公布号	US1797711(A)	申请公布日期	1931.03.24
申请号	US19290348690	申请日期	1929.03.21
申请人	SIEMENS & HALSKE, AKTIENGESELLSCHAFT	发明人	BORNSCHEIN RODOLPHO
分类号	H04L17/18;H04L17/24	主分类号	H04L17/18
代理机构		代理人
主权项
地址

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