Invention Grant
US3449564A Mass spectrometer leak detector circuit means employing an insulated gate field effect transistor
失效
大量光谱仪漏电检测器电路采用绝缘栅场效应晶体管
- Patent Title: Mass spectrometer leak detector circuit means employing an insulated gate field effect transistor
- Patent Title (中): 大量光谱仪漏电检测器电路采用绝缘栅场效应晶体管
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Application No.: US3449564DApplication Date: 1966-12-09
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Publication No.: US3449564APublication Date: 1969-06-10
- Inventor: HARVEY PHILIP C , SHELDON DEANE P , OPIJNEN LEENDERT J K VAN
- Applicant: NAT RES CORP
- Assignee: NAT RES CORP
- Current Assignee: NAT RES CORP
- Priority: US60062266 1966-12-09
- Main IPC: H01J49/02
- IPC: H01J49/02 ; B01D59/44
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