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发明名称
Language laboratory student station
摘要
申请公布号
US2961280(A)
申请公布日期
1960.11.22
申请号
US19590801015
申请日期
1959.03.23
申请人
JENTZEN-MILLER COMPANY
发明人
JENTZEN SYDNEY W.
分类号
A47B41/00;A47B47/02
主分类号
A47B41/00
代理机构
代理人
主权项
地址
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