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经营范围
发明名称
Backspacing apparatus for dictating machines
摘要
申请公布号
US3197213(A)
申请公布日期
1965.07.27
申请号
US19630268878
申请日期
1963.03.29
申请人
DICTAPHONE CORPORATION
发明人
TAYLOR ABRAHAM
分类号
主分类号
代理机构
代理人
主权项
地址
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