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发明名称
Selective character bearing device
摘要
申请公布号
US2221926(A)
申请公布日期
1940.11.19
申请号
US19390290708
申请日期
1939.08.17
申请人
HICKOK MANUFACTURING COMPANY, INC.
发明人
QUANT HARRY R.
分类号
G09F7/10
主分类号
G09F7/10
代理机构
代理人
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地址
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