Casque téléphonique pour aviation,申请号FRD679502-传众专利搜索

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发明名称	Casque téléphonique pour aviation
摘要
申请公布号	FR679502(A)	申请公布日期	1930.04.14
申请号	FRD679502	申请日期	1929.07.29
申请人		发明人	JONGHI TITO RODOLFO
分类号	A42B3/30;H04M1/05	主分类号	A42B3/30
代理机构		代理人
主权项
地址

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