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发明名称
Optical measuring device
摘要
申请公布号
US2285498(A)
申请公布日期
1942.06.09
申请号
US19400337446
申请日期
1940.05.27
申请人
DAVID BRUCE W
发明人
DAVID BRUCE W.
分类号
主分类号
代理机构
代理人
主权项
地址
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