Appareil acoustique comportant une membrane vibrante.,申请号CHD144339-传众专利搜索

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发明名称	Appareil acoustique comportant une membrane vibrante.
摘要
申请公布号	CH144339(A)	申请公布日期	1930.12.31
申请号	CHD144339	申请日期	1929.06.08
申请人	SOCIETE FRANCAISE RADIO-ELECTRIQUE	发明人	RADIO-ELECTRIQUE SOCIETE FRANCAISE
分类号		主分类号
代理机构		代理人
主权项
地址

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