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发明名称
Typewriting machine
摘要
申请公布号
US2084803(A)
申请公布日期
1937.06.22
申请号
US19360077420
申请日期
1936.05.01
申请人
ROYAL TYPEWRITER COMPANY, INC.
发明人
HART HENRY JOSEPH
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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