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发明名称
Electrical device
摘要
申请公布号
US2831149(A)
申请公布日期
1958.04.15
申请号
US19500173494
申请日期
1950.07.13
申请人
NORTH AMERICAN PHILIPS COMPANY, INC.
发明人
JAMISON NOEL C.
分类号
H01J40/00
主分类号
H01J40/00
代理机构
代理人
主权项
地址
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