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发明名称
Coating for thermionic devices
摘要
申请公布号
US1870003(A)
申请公布日期
1932.08.02
申请号
US19270195862
申请日期
1927.06.01
申请人
WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY
发明人
ELSEY HOWARD M.;KROGH ALVIN T.
分类号
H01J9/04
主分类号
H01J9/04
代理机构
代理人
主权项
地址
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