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发明名称
Optical device
摘要
申请公布号
US1996926(A)
申请公布日期
1935.04.09
申请号
US19330673666
申请日期
1933.05.31
申请人
FRANK KREMENTZ COMPANY
发明人
KREMENTZ ALBERT M.
分类号
G02C5/12
主分类号
G02C5/12
代理机构
代理人
主权项
地址
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