Invention Grant
- Patent Title: Electron discharge device
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Application No.: US24628838Application Date: 1938-12-17
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Publication No.: US2272844APublication Date: 1942-02-10
- Inventor: HENDRIK JONKER JOHAN LODEWIJK
- Applicant: RCA CORP
- Assignee: RCA Corp
- Current Assignee: RCA Corp
- Priority: NL2272844X 1938-01-08
- Main IPC: H01J21/12
- IPC: H01J21/12
Information query
