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发明名称
FREQUENCY CONTROL SYSTEMS
摘要
申请公布号
CA477067(A)
申请公布日期
1951.09.18
申请号
CAD477067
申请日期
申请人
GENERAL ELECTRIC COMPANY
发明人
HARRY FREDERICK MAYER
分类号
主分类号
代理机构
代理人
主权项
地址
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