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发明名称
Log scale
摘要
申请公布号
US2503398(A)
申请公布日期
1950.04.11
申请号
US19470772647
申请日期
1947.09.08
申请人
LINDSEY WILLIAM S
发明人
LINDSEY WILLIAM S.
分类号
G01G23/24
主分类号
G01G23/24
代理机构
代理人
主权项
地址
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