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发明名称
Typewriting machine
摘要
申请公布号
US1833897(A)
申请公布日期
1931.12.01
申请号
US19290402083
申请日期
1929.10.24
申请人
L. C. SMITH & CORONA TYPEWRITERS INC.
发明人
GABRIELSON CARL
分类号
B41J13/30
主分类号
B41J13/30
代理机构
代理人
主权项
地址
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