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发明名称
Typewriting machine
摘要
申请公布号
US2003211(A)
申请公布日期
1935.05.28
申请号
US19340742787
申请日期
1934.09.05
申请人
ROYAL TYPEWRITER COMPANY, INC.
发明人
MICHELSEN WILLIAM O.
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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