Patent US2339402A successfully refreshed from Google Patents.
US2339402A
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US
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Electron discharge device
Assignee: RCA Corp
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Filing: 1942-12-24
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Granted: 1944-01-18
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Expires: 1962-12-24
Abstract
No abstract record available.
Inventors
- 👤 Herzog Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J19/50; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0008; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-01-17 | 1947-07-19 | 1948-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-17 | 1951-07-19 | 1952-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-17 | 1955-07-19 | 1956-01-18 | $7700.00 | Window Closed / Lapsed |