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发明名称
Light sensitive measuring instrument
摘要
申请公布号
US2263938(A)
申请公布日期
1941.11.25
申请号
US19400355011
申请日期
1940.08.31
申请人
HOWARD SMITH PAPER MILLS LIMITED
发明人
WEST DOUGLAS L.
分类号
G01N21/47
主分类号
G01N21/47
代理机构
代理人
主权项
地址
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