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发明名称
Typewriting machine
摘要
申请公布号
US2295921(A)
申请公布日期
1942.09.15
申请号
US19400344766
申请日期
1940.07.10
申请人
L. C. SMITH & CORONA TYPEWRITERS, INC.
发明人
WALKER CHARLES;GABRIELSON WILLIAM A.
分类号
B41J29/50
主分类号
B41J29/50
代理机构
代理人
主权项
地址
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