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经营范围
发明名称
LIFETIME DETECTION*DISPLAY DEVICE OF SIGNAL DETECTING MEANS
摘要
申请公布号
JPS5677904(A)
申请公布日期
1981.06.26
申请号
JP19790154169
申请日期
1979.11.30
申请人
HITACHI LTD
发明人
YAMASHITA KIYOU
分类号
G11B3/54;G11B9/06;G11B11/00
主分类号
G11B3/54
代理机构
代理人
主权项
地址
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