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发明名称
Extensible flashlight
摘要
申请公布号
US2550423(A)
申请公布日期
1951.04.24
申请号
US19460697928
申请日期
1946.09.19
申请人
NELSON MILTON A
发明人
NELSON MILTON A.
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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