US2661392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television
Assignee: EMI Ltd
•
Filing: 1947-12-13
•
Granted: 1953-12-01
•
Expires: 1967-12-13
Abstract
No abstract record available.
Inventors
- 👤 Lubszynski Hans Gerhard
- 👤 Webley Reginald Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:33
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/03; H04N23/00; H04N23/10; H04N23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1839361A
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US2492926A
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US2253292A
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US2296908A
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US2303898A
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US2294820A
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US2389646A
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US2461515A
Cited
US2446249A
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US2446791A
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US2479820A
Cited
US2552386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |