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发明名称
Sky lookout chair
摘要
申请公布号
US2807089(A)
申请公布日期
1957.09.24
申请号
US19540453368
申请日期
1954.08.31
申请人
LEWIS JR DONALD A
发明人
JR. DONALD A. LEWIS,
分类号
G02B7/00;G02B23/16
主分类号
G02B7/00
代理机构
代理人
主权项
地址
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