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发明名称
Signaling device employing polarized light
摘要
申请公布号
US2122225(A)
申请公布日期
1938.06.28
申请号
US19370160753
申请日期
1937.08.25
申请人
SHEET POLARIZER COMPANY, INC.
发明人
WHEELWRIGHT GEORGE W.
分类号
G02B27/28
主分类号
G02B27/28
代理机构
代理人
主权项
地址
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