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发明名称
DUPLICATING DEVICE FOR TYPEWRITERS
摘要
申请公布号
CA348834(A)
申请公布日期
1935.03.12
申请号
CAD348834
申请日期
申请人
THE COPELAND-CHATTERSON LIMITED
发明人
ROBERT J. COPELAND
分类号
主分类号
代理机构
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