US2851522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television
Assignee: CBS Broadcasting Inc
•
Filing: 1951-12-13
•
Granted: 1958-09-09
•
Expires: 1971-12-13
Abstract
No abstract record available.
Inventors
- 👤 John M Hollywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:28
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/20; H04N5/205; H04N5/208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB413401A
Cited
US2182326A
Cited
US2134094A
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US2227630A
Cited
US2243599A
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US2263376A
Cited
US2273163A
Cited
US2421138A
Cited
US2678389A
Cited
US2678388A
Cited
US2678964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |