Invention Grant
US3476972A Device for exchanging electron sources in electrical discharge devices
失效
用于在电子放电装置中交换电子源的装置
- Patent Title: Device for exchanging electron sources in electrical discharge devices
- Patent Title (中): 用于在电子放电装置中交换电子源的装置
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Application No.: US3476972DApplication Date: 1968-04-05
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Publication No.: US3476972APublication Date: 1969-11-04
- Inventor: KATAGIRI SHINJIRO , MINAMIKAWA YOSHIHISA
- Applicant: HITACHI LTD
- Assignee: Hitachi Ltd
- Current Assignee: Hitachi Ltd
- Priority: JP2289867 1967-04-12
- Main IPC: H01J3/02
- IPC: H01J3/02 ; H01J9/50 ; H01J29/86 ; H01J1/02 ; H01J9/02
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