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发明名称
Varifocal lens systems
摘要
申请公布号
US2937572(A)
申请公布日期
1960.05.24
申请号
US19580708782
申请日期
1958.01.14
申请人
CANON CAMERA COMPANY, INC.
发明人
YAMAJI KEIZO
分类号
G02B15/14
主分类号
G02B15/14
代理机构
代理人
主权项
地址
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