Improvements in or relating to loudspeaking telephone instruments,申请号GB19590014788-传众专利搜索

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发明名称	Improvements in or relating to loudspeaking telephone instruments
摘要
申请公布号	GB909164(A)	申请公布日期	1962.10.24
申请号	GB19590014788	申请日期	1959.04.30
申请人	TELEFONAKTIEBOLAGET L M ERICSSON	发明人
分类号	H04M;H04M1/62	主分类号	H04M
代理机构		代理人
主权项
地址

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