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发明名称
Position-line Indicator
摘要
申请公布号
GB2076150(A)
申请公布日期
1981.11.25
申请号
GB19810015543
申请日期
1981.05.20
申请人
HUGHES JOHN WILLIAM
发明人
分类号
G01C21/04;(IPC1-7):G01C21/04
主分类号
G01C21/04
代理机构
代理人
主权项
地址
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