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发明名称
Typewriter support
摘要
申请公布号
US1929048(A)
申请公布日期
1933.10.03
申请号
US19300490915
申请日期
1930.10.24
申请人
ASH ELMER E
发明人
ASH ELMER E.
分类号
A47B21/02
主分类号
A47B21/02
代理机构
代理人
主权项
地址
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