Patent US2804495A successfully refreshed from Google Patents.
US2804495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television transmitting system
Assignee: Marconis Wireless Telegraph Co Ltd
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Filing: 1951-02-06
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Granted: 1957-08-27
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Expires: 1971-02-06
Abstract
No abstract record available.
Inventors
- 👤 Jesty Leslie Connock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:11
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/2806; H; H04; H04N; H04N23/00; H04N23/10; H04N23/12; H04N23/40
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) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |