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发明名称
Duplicating attachment for typewriters
摘要
申请公布号
US2010137(A)
申请公布日期
1935.08.06
申请号
US19340737960
申请日期
1934.08.01
申请人
CARGILL NORMAN V;MEDLOCK JOHN J
发明人
CARGILL NORMAN V.;MEDLOCK JOHN J.
分类号
B41J35/35
主分类号
B41J35/35
代理机构
代理人
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