Blocs de réception, audition et extinction,申请号FRD913373-传众专利搜索

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发明名称	Blocs de réception, audition et extinction
摘要
申请公布号	FR913373(A)	申请公布日期	1946.09.05
申请号	FRD913373	申请日期	1945.08.14
申请人	IPSOPHON PATENTGESELLSCHAFT A.-G.	发明人
分类号	G11B5/265	主分类号	G11B5/265
代理机构		代理人
主权项
地址

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