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发明名称
Typewriter attachment for desks
摘要
申请公布号
US1949118(A)
申请公布日期
1934.02.27
申请号
US19310561709
申请日期
1931.09.08
申请人
EARLEY MARTIN A
发明人
EARLEY MARTIN A.
分类号
A47B21/03
主分类号
A47B21/03
代理机构
代理人
主权项
地址
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