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发明名称
METHOD OF MEASURING HELICAL ANGLE OF HELICAL SCAN TRACK
摘要
申请公布号
JPS57122307(A)
申请公布日期
1982.07.30
申请号
JP19810008105
申请日期
1981.01.23
申请人
SONY KK
发明人
HAMANO KENICHI
分类号
G01B21/22;G01B21/30
主分类号
G01B21/22
代理机构
代理人
主权项
地址
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