US3436471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multichannel television transmission system utilizing the blanking intervals of transmitted television signals as time slots to accommodate additional television signals
Assignee: AT&T Inc
•
Filing: 1966-06-01
•
Granted: 1969-04-01
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Expires: 1986-06-01
Abstract
No abstract record available.
Inventors
- 👤 Frank W Mounts
- 👤 Birendra Prasada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:18
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/17; H04N; H04N7/00; H04N7/08; H04N7/084; H04N7/085; H04N7/0855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2477679A
Cited
US2527967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |