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发明名称
Optical system
摘要
申请公布号
US1947565(A)
申请公布日期
1934.02.20
申请号
US19310528096
申请日期
1931.04.06
申请人
RADIO CORPORATION
发明人
JR. JOHN A. MAURER,
分类号
G02B13/08
主分类号
G02B13/08
代理机构
代理人
主权项
地址
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