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发明名称
Fly exit
摘要
申请公布号
US1757868(A)
申请公布日期
1930.05.06
申请号
US19290398211
申请日期
1929.10.08
申请人
LEWIS HUGH G
发明人
LEWIS HUGH G.
分类号
E06B9/52
主分类号
E06B9/52
代理机构
代理人
主权项
地址
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