US3030437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colour television apparatus for converting field sequential to simultaneous signals
Assignee: EMI Ltd
•
Filing: 1953-10-07
•
Granted: 1962-04-17
•
Expires: 1973-10-07
Abstract
No abstract record available.
Inventors
- 👤 James Ivanhoe John Penfound
- 👤 Perkins Denis Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:17
CPC Classifications
H; H04; H04N; H04N11/00; H04N11/06; H04N11/20; H04N11/22; H04N7/00; H04N7/01; H04N7/0105; H04N7/0107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |