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发明名称
Pull out typewriter supports
摘要
申请公布号
US2710782(A)
申请公布日期
1955.06.14
申请号
US19510243268
申请日期
1951.08.23
申请人
CHAFT MARC E
发明人
CHAFT MARC 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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