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发明名称
Writing machine attachment
摘要
申请公布号
US2233775(A)
申请公布日期
1941.03.04
申请号
US19390259505
申请日期
1939.03.03
申请人
RAYMOND DOW
发明人
DOW RAYMOND
分类号
B41J29/46;B41J29/48
主分类号
B41J29/46
代理机构
代理人
主权项
地址
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