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发明名称
Masking or screening device for lamps
摘要
申请公布号
US2358636(A)
申请公布日期
1944.09.19
申请号
US19420439460
申请日期
1942.04.18
申请人
VINCENT HARTLEY
发明人
HARTLEY VINCENT
分类号
F21V11/00
主分类号
F21V11/00
代理机构
代理人
主权项
地址
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