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发明名称
Geometrical instrument
摘要
申请公布号
US1951899(A)
申请公布日期
1934.03.20
申请号
US19300462526
申请日期
1930.06.20
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BUDENBOM HORACE T.
分类号
G01R27/32
主分类号
G01R27/32
代理机构
代理人
主权项
地址
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