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发明名称
Portable periscope for viewing public events
摘要
申请公布号
US3357777(A)
申请公布日期
1967.12.12
申请号
US19630298712
申请日期
1963.07.30
申请人
LAURIE KALLIO
发明人
KALLIO LAURIE
分类号
G02B7/18;G02B23/08
主分类号
G02B7/18
代理机构
代理人
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地址
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