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发明名称
Multiple panel display board
摘要
申请公布号
US2526603(A)
申请公布日期
1950.10.17
申请号
US19470727754
申请日期
1947.02.11
申请人
HILE-DAMROTH, INC.
发明人
DAMROTH WILLIAM G.
分类号
G09F15/00
主分类号
G09F15/00
代理机构
代理人
主权项
地址
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INFORMATION PROCESSOR
