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经营范围
发明名称
Light polarizing system
摘要
申请公布号
US2230262(A)
申请公布日期
1941.02.04
申请号
US19380200139
申请日期
1938.04.05
申请人
LEON POLLACK
发明人
POLLACK LEON
分类号
B61L23/18;F21S8/10;F21V9/14
主分类号
B61L23/18
代理机构
代理人
主权项
地址
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