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发明名称
Improvements in typewriters
摘要
申请公布号
GB855127(A)
申请公布日期
1960.11.30
申请号
GB19570026821
申请日期
1957.08.26
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
分类号
B41J7/64;B41J19/36
主分类号
B41J7/64
代理机构
代理人
主权项
地址
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