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发明名称
Typewriting machine
摘要
申请公布号
US1909764(A)
申请公布日期
1933.05.16
申请号
US19290373731
申请日期
1929.06.26
申请人
UNDERWOOD ELLIOTT FISHER COMPANY
发明人
HELMOND WILLIAM F.
分类号
B41J19/42
主分类号
B41J19/42
代理机构
代理人
主权项
地址
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