Patent US2070489A successfully refreshed from Google Patents.
Patent US2531823A successfully refreshed from Google Patents.
US2531823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television apparatus
Assignee: Individual
•
Filing: 1946-11-13
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Granted: 1950-11-28
•
Expires: 1966-11-13
Abstract
No abstract record available.
Inventors
- 👤 Howard J Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:00
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118160A
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US1913795A
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US2109540A
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US2163530A
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US2225922A
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US2184999A
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US2350892A
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US2301254A
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US2328219A
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US2393968A
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US2263684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |