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发明名称
Adjustable price indicator
摘要
申请公布号
US2021236(A)
申请公布日期
1935.11.19
申请号
US19340713368
申请日期
1934.02.28
申请人
CHARLES GREATTINGER;COX RICHARD T
发明人
GREATTINGER CHARLES;COX RICHARD T.
分类号
G09F3/20
主分类号
G09F3/20
代理机构
代理人
主权项
地址
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