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经营范围
发明名称
DATA RETRIEVAL UNIT
摘要
申请公布号
JPS5230134(A)
申请公布日期
1977.03.07
申请号
JP19750106187
申请日期
1975.09.02
申请人
HITACHI LTD
发明人
UCHIDA SHIGERU;KOSEKI TAKASHI
分类号
G03B21/11;G06F17/30
主分类号
G03B21/11
代理机构
代理人
主权项
地址
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