Invention Grant
- Patent Title: Electron discharge device
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Application No.: US74305834Application Date: 1934-09-07
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Publication No.: US2148538APublication Date: 1939-02-28
- Inventor: CHARLES DEPEW , RONCI VICTOR L
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US74305834 1934-09-07
- Main IPC: H01J19/42
- IPC: H01J19/42
Information query
