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发明名称
Typewriter with multiple ribbons
摘要
申请公布号
US3367471(A)
申请公布日期
1968.02.06
申请号
US19650484058
申请日期
1965.08.31
申请人
CARROLL H. BERILL
发明人
BERILL CARROLL H.
分类号
B41J35/30
主分类号
B41J35/30
代理机构
代理人
主权项
地址
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