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经营范围
发明名称
Exposure meter
摘要
申请公布号
US2394835(A)
申请公布日期
1946.02.12
申请号
US19440555820
申请日期
1944.09.26
申请人
ARANT LUTHER M
发明人
ARANT LUTHER M.
分类号
G01J1/42
主分类号
G01J1/42
代理机构
代理人
主权项
地址
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