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发明名称
Shadowless portable lamp with shade
摘要
申请公布号
US1802493(A)
申请公布日期
1931.04.28
申请号
US19290336619
申请日期
1929.01.31
申请人
ARENBERG ALBERT L
发明人
ARENBERG ALBERT L.
分类号
F21S6/00;F21S13/00
主分类号
F21S6/00
代理机构
代理人
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地址
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