Prophylactic screen for a telephone earpiece,申请号GB19630038192-传众专利搜索

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发明名称	Prophylactic screen for a telephone earpiece
摘要
申请公布号	GB999682(A)	申请公布日期	1965.07.28
申请号	GB19630038192	申请日期	1963.09.27
申请人	GIOVANNI BATTISTA VISCARDI	发明人
分类号	H04R1/12	主分类号	H04R1/12
代理机构		代理人
主权项
地址

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