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发明名称
Light shade
摘要
申请公布号
US2271515(A)
申请公布日期
1942.02.03
申请号
US19400355923
申请日期
1940.09.09
申请人
JOHN ULETT
发明人
ULETT JOHN
分类号
F21V1/00;F21V17/04
主分类号
F21V1/00
代理机构
代理人
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地址
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