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发明名称
Character printing devices
摘要
申请公布号
US2753792(A)
申请公布日期
1956.07.10
申请号
US19500202112
申请日期
1950.12.21
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
CARROLL FRED M.;SMITH ARTHUR F.
分类号
B41L45/00;G06K13/07;G06K13/12
主分类号
B41L45/00
代理机构
代理人
主权项
地址
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