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发明名称
RARE EARTH CHALCOGENIDE THERMIONIC EMISSION CATHODES
摘要
申请公布号
US3636399(A)
申请公布日期
1972.01.18
申请号
USD3636399
申请日期
1970.10.21
申请人
DEAN E. EASTMAN;FREDERICK HOLTZBERG;SIEGFRIED I. METHFESSEL
发明人
DEAN E. EASTMAN;FREDERICK HOLTZBERG;SIEGFRIED I. METHFESSEL
分类号
H01J1/14;(IPC1-7):H01J1/14;H01J19/06
主分类号
H01J1/14
代理机构
代理人
主权项
地址
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