US2738379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television apparatus
Assignee: EMI Ltd
•
Filing: 1951-12-19
•
Granted: 1956-03-13
•
Expires: 1971-12-19
Abstract
No abstract record available.
Inventors
- 👤 James Ivanhoe John Penfound
- 👤 Lodge James Alec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:41
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/01; H04N25/00; H04N25/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2490812A
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US2552070A
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US2621245A
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US2615976A
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US2579971A
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US2545325A
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US2545957A
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US2641643A
Cited
US2641642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |