US2820091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television, frequency control system
Assignee: Motorola Solutions Inc
•
Filing: 1952-01-30
•
Granted: 1958-01-14
•
Expires: 1972-01-30
Abstract
No abstract record available.
Inventors
- 👤 Norman W Parker
- 👤 Bernard S Parmet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:35
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/44; H04N9/455
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2293147A
Cited
US2546972A
Cited
US2664462A
Cited
US2678348A
Cited
US2594380A
Cited
US2653187A
Cited
US2586957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |