Perfectionnements aux électrophones,申请号FRD1191513-传众专利搜索

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发明名称	Perfectionnements aux électrophones
摘要
申请公布号	FR1191513(A)	申请公布日期	1959.10.20
申请号	FRD1191513	申请日期	1958.02.13
申请人		发明人	DENTZER MARCEL
分类号	H04R1/02	主分类号	H04R1/02
代理机构		代理人
主权项
地址

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