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发明名称
Typewriting machine
摘要
申请公布号
US1829931(A)
申请公布日期
1931.11.03
申请号
US19300433064
申请日期
1930.03.04
申请人
ROYAL TYPEWRITER COMPANY, INC.
发明人
HESS EDWARD B.
分类号
B41J29/56
主分类号
B41J29/56
代理机构
代理人
主权项
地址
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