Invention Grant
- Patent Title: Secondary electron emitter and method of making it
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Application No.: US19594138Application Date: 1938-03-15
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Publication No.: US2190695APublication Date: 1940-02-20
- Inventor: HAJO BRUINING , DE BOER JAN HENDRIK , CORNELIS TEVES MARTEN
- Applicant: RCA CORP
- Assignee: Hitachi Ltd,Hitachi Power Semiconductor Device Ltd
- Current Assignee: Hitachi Ltd,Hitachi Power Semiconductor Device Ltd
- Priority: NL207265X 1937-04-02
- Main IPC: H01J9/12
- IPC: H01J9/12
Information query
