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发明名称
ELECTRONIC DEVICE
摘要
申请公布号
CA457714(A)
申请公布日期
1949.06.28
申请号
CAD457714
申请日期
申请人
RAYTHEON MANUFACTURING COMPANY
发明人
PERCY L. SPENCER
分类号
主分类号
代理机构
代理人
主权项
地址
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