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发明名称
Plumb level
摘要
申请公布号
US1820365(A)
申请公布日期
1931.08.25
申请号
US19300418914
申请日期
1930.01.06
申请人
RIES LEWIS B;DICKERSON JAMES B
发明人
RIES LEWIS B.;DICKERSON JAMES B.
分类号
G01C9/34
主分类号
G01C9/34
代理机构
代理人
主权项
地址
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