US2474026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for electron discharge device of the high-frequency type
Assignee: RCA Corp
•
Filing: 1944-04-06
•
Granted: 1949-06-21
•
Expires: 1964-04-06
Abstract
No abstract record available.
Inventors
- 👤 John B Atwood
- 👤 Trevor Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:21
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2351895A
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US2278210A
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US2284405A
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US2353742A
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US2414100A
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US2404082A
Cited
US2408355A
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US2400753A
Cited
US2408927A
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US2411424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |