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发明名称
Sign device
摘要
申请公布号
US2663959(A)
申请公布日期
1953.12.29
申请号
US19490108899
申请日期
1949.08.06
申请人
C. BLAND JAMISON;MILLER ALLEN
发明人
FUERST HARRY W.
分类号
G09F19/12
主分类号
G09F19/12
代理机构
代理人
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