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发明名称
Variable image-observing device
摘要
申请公布号
US2218301(A)
申请公布日期
1940.10.15
申请号
US19380230827
申请日期
1938.09.20
申请人
THE REFLECTONE CORPORATION
发明人
SIMJIAN LUTHER G.
分类号
A45D42/18;A47C1/00;A47C1/04;G03B15/06
主分类号
A45D42/18
代理机构
代理人
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地址
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