US2506733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device and associated cavity resonator circuits
Assignee: RCA Corp
•
Filing: 1944-10-21
•
Granted: 1950-05-09
•
Expires: 1964-10-21
Abstract
No abstract record available.
Inventors
- 👤 Leon S Nergaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:31
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2312723A
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US2272211A
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US2409222A
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US2353742A
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US2421636A
Cited
US2428888A
Cited
US2432466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |