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经营范围
发明名称
Improvements in typewriting machines
摘要
申请公布号
GB529722(A)
申请公布日期
1940.11.27
申请号
GB19390014577
申请日期
1939.05.16
申请人
ROYAL TYPEWRITER COMPANY, INC.
发明人
分类号
B41J21/04
主分类号
B41J21/04
代理机构
代理人
主权项
地址
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