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发明名称
HOLLOW-CATHODE MAGNETRON APPARATUS
摘要
申请公布号
GB8925879(D0)
申请公布日期
1990.01.04
申请号
GB19890025879
申请日期
1989.11.15
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
分类号
C23C14/35;C23C14/34;H01J37/34
主分类号
C23C14/35
代理机构
代理人
主权项
地址
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