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发明名称
Electric photometer
摘要
申请公布号
US2151187(A)
申请公布日期
1939.03.21
申请号
US19370143997
申请日期
1937.05.21
申请人
CHRISTOPHER DANIEL E
发明人
CHRISTOPHER DANIEL E.
分类号
G01J1/12
主分类号
G01J1/12
代理机构
代理人
主权项
地址
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