Patent US2441880A successfully refreshed from Google Patents.
US2441880A
Expired / Lapsed
US
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Video amplifier
Assignee: RCA Corp
•
Filing: 1944-11-29
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Granted: 1948-05-18
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Expires: 1964-11-29
Abstract
No abstract record available.
Inventors
- 👤 Goodale Elmer Dudley
- 👤 Vernon J Duke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:50
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/16; H04N5/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2240281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |