Invention Grant
- Patent Title: Electron discharge device
-
Application No.: US43988242Application Date: 1942-04-21
-
Publication No.: US2320120APublication Date: 1943-05-25
- Inventor: CHARLES DEPEW , WARREN GRONROS , RONCI VICTOR L
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US43988242 1942-04-21
- Main IPC: H01J19/42
- IPC: H01J19/42
Information query
