Invention Grant
US3223877A Electron discharge device having filamentary cathode tensioning means
失效
具有丝状阴极张紧装置的电子放电装置
- Patent Title: Electron discharge device having filamentary cathode tensioning means
- Patent Title (中): 具有丝状阴极张紧装置的电子放电装置
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Application No.: US10672249Application Date: 1949-07-25
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Publication No.: US3223877APublication Date: 1965-12-14
- Inventor: WEISS MORTIMER E
- Applicant: SYLVANIA ELECTRIC PROD
- Assignee: Sylvania Electric Prod
- Current Assignee: Sylvania Electric Prod
- Priority: US10672249 1949-07-25
- Main IPC: H01J1/18
- IPC: H01J1/18
Public/Granted literature
- US06851751B1 Wheelchair seat lift apparatus Public/Granted day:2005-02-08
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