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发明名称
Typewriting machine
摘要
申请公布号
US2317183(A)
申请公布日期
1943.04.20
申请号
US19400369467
申请日期
1940.12.10
申请人
UNDERWOOD ELLIOTT FISHER COMPANY
发明人
DOBSON WILLIAM A.
分类号
B41J21/02
主分类号
B41J21/02
代理机构
代理人
主权项
地址
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