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发明名称
Dial indicator
摘要
申请公布号
US1768931(A)
申请公布日期
1930.07.01
申请号
US19290367864
申请日期
1929.06.03
申请人
JACKSON PRATT FREDERICK
发明人
PRATT FREDERICK JACKSON
分类号
G01B5/00
主分类号
G01B5/00
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