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发明名称
Control device
摘要
申请公布号
US2002798(A)
申请公布日期
1935.05.28
申请号
US19310573133
申请日期
1931.11.05
申请人
DICTAPHONE CORPORATION
发明人
RENHOLDT JOHN E.
分类号
主分类号
代理机构
代理人
主权项
地址
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