Improvements in moving coil diaphrams for electrodynamic sound transmitting and receiving devices,申请号GB19510026799-传众专利搜索

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发明名称	Improvements in moving coil diaphrams for electrodynamic sound transmitting and receiving devices
摘要
申请公布号	GB705965(A)	申请公布日期	1954.03.24
申请号	GB19510026799	申请日期	1951.11.15
申请人	RALPH LITTMANN	发明人
分类号	H04R9/04	主分类号	H04R9/04
代理机构		代理人
主权项
地址

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