Звуковая линза,申请号SU19520448792-传众专利搜索

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发明名称	Звуковая линза
摘要
申请公布号	SU99435(A1)	申请公布日期	1953.11.30
申请号	SU19520448792	申请日期	1952.06.25
申请人	BELKIN B.G.	发明人	BELKIN B.G.
分类号	G10K13/00	主分类号	G10K13/00
代理机构		代理人
主权项
地址

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