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发明名称
Improvements relating to typewriters
摘要
申请公布号
GB702747(A)
申请公布日期
1954.01.20
申请号
GB19500027482
申请日期
1950.11.10
申请人
JOHN JARDINE LIMITED;FRANK STANLEY HARDY
发明人
分类号
B41J19/40
主分类号
B41J19/40
代理机构
代理人
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