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发明名称
Means for comparative determination of transmitted and reflected light
摘要
申请公布号
US2196234(A)
申请公布日期
1940.04.09
申请号
US19380211282
申请日期
1938.05.27
申请人
TOWNSEND LEONARD G
发明人
TOWNSEND LEONARD G.
分类号
G01J1/22
主分类号
G01J1/22
代理机构
代理人
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地址
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