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经营范围
发明名称
Dictating machine
摘要
申请公布号
US2866647(A)
申请公布日期
1958.12.30
申请号
US19530347875
申请日期
1953.04.10
申请人
MCGRAW-EDISON COMPANY
发明人
SOMERS RICHARD M.
分类号
G11B19/02
主分类号
G11B19/02
代理机构
代理人
主权项
地址
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