METHOD AND APPARATUS FOR PREVENTING UNAUTHORISED RECORDING OF SOURCE MATERIAL (EG, A GRAMOPHONE RECORDING),申请号GB19810024048-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR PREVENTING UNAUTHORISED RECORDING OF SOURCE MATERIAL (EG, A GRAMOPHONE RECORDING)
摘要
申请公布号	GB2104701(B)	申请公布日期	1985.06.05
申请号	GB19810024048	申请日期	1981.08.06
申请人	JAMES BERTRAM * KING	发明人	JAMES BERTRAM * KING
分类号	G11B20/00;G11B23/28;G11B27/28;H04N5/913;(IPC1-7):G11B27/28	主分类号	G11B20/00
代理机构		代理人
主权项
地址

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