An improved system for transmitting alarm signals,申请号GB19290022658-传众专利搜索

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发明名称	An improved system for transmitting alarm signals
摘要
申请公布号	GB316148(A)	申请公布日期	1930.01.06
申请号	GB19290022658	申请日期	1928.07.04
申请人	SIEMENS & HALSKE AKTIEN-GESELLSCHAFT	发明人
分类号	F16K17/00;H04M11/04	主分类号	F16K17/00
代理机构		代理人
主权项
地址

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