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发明名称
Improvements in or relating to a typewriter attachment for manifolding
摘要
申请公布号
GB542651(A)
申请公布日期
1942.01.21
申请号
GB19400011927
申请日期
1940.07.19
申请人
ROBERT JAMES COPELAND
发明人
分类号
B41J17/00
主分类号
B41J17/00
代理机构
代理人
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