Appareil sonore d'utilité publique,申请号FRD821569-传众专利搜索

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发明名称	Appareil sonore d'utilité publique
摘要
申请公布号	FR821569(A)	申请公布日期	1937.12.08
申请号	FRD821569	申请日期	1936.08.14
申请人		发明人	ALEXANDRE DHAYTON-DZIECIOLOWSK
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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