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发明名称
Flashlight attachment
摘要
申请公布号
US2215829(A)
申请公布日期
1940.09.24
申请号
US19400327024
申请日期
1940.03.30
申请人
EVANS OSCAR G
发明人
EVANS OSCAR G.
分类号
F21L4/00
主分类号
F21L4/00
代理机构
代理人
主权项
地址
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