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发明名称
Spirit level
摘要
申请公布号
GB2302944(A)
申请公布日期
1997.02.05
申请号
GB19950013589
申请日期
1995.07.04
申请人
JOHN JAMES * BELL
发明人
JOHN JAMES * BELL
分类号
G01C9/28;(IPC1-7):G01C9/28
主分类号
G01C9/28
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