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发明名称
APPARATUS FOR RECORDING AND/OR READING INFORMATION BY MEANS OF A RADIATION BEAM
摘要
申请公布号
SG49590(G)
申请公布日期
1990.08.31
申请号
SG19900000495
申请日期
1990.07.04
申请人
PHILIPS NV
发明人
分类号
G02B7/00;G11B7/08;G11B7/085;G11B21/02;(IPC1-7):G11B7/08
主分类号
G02B7/00
代理机构
代理人
主权项
地址
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