Invention Grant
- Patent Title: Backward wave tube
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Application No.: US39294653Application Date: 1953-11-18
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Publication No.: US2891191APublication Date: 1959-06-16
- Inventor: HUBERT HEFFNER , RUDOLF KOMPFNER
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US39294653 1953-11-18
- Main IPC: H01J25/36
- IPC: H01J25/36 ; H01J25/40
Information query
