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经营范围
发明名称
Opera glass
摘要
申请公布号
US2002782(A)
申请公布日期
1935.05.28
申请号
US19330689174
申请日期
1933.09.13
申请人
LESTER ROBERT G
发明人
LESTER ROBERT G.
分类号
G02B23/18
主分类号
G02B23/18
代理机构
代理人
主权项
地址
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