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发明名称
Illuminable sign having removable lamp and socket units
摘要
申请公布号
US2620580(A)
申请公布日期
1952.12.09
申请号
US19490086756
申请日期
1949.04.11
申请人
DWINELL CHARLES L
发明人
DWINELL CHARLES L.
分类号
G09F13/04;G09F13/26
主分类号
G09F13/04
代理机构
代理人
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