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发明名称
Sign holder and support
摘要
申请公布号
US2421741(A)
申请公布日期
1947.06.10
申请号
US19430510695
申请日期
1943.11.17
申请人
LOUIS AUSTIN
发明人
BLOSS BENJAMIN FLOYD
分类号
G09F7/18
主分类号
G09F7/18
代理机构
代理人
主权项
地址
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