An intrinsic safety telephone device,申请号GB19650021706-传众专利搜索

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发明名称	An intrinsic safety telephone device
摘要
申请公布号	GB1041329(A)	申请公布日期	1966.09.07
申请号	GB19650021706	申请日期	1965.05.21
申请人	SOCIETE D'ELECTRONIQUE ET D'AUTOMATISME	发明人
分类号	H04M1/18;H04M5/12;H04M19/04	主分类号	H04M1/18
代理机构		代理人
主权项
地址

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