US3511936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiply orthogonal system for transmitting data signals through frequency overlapping channels
Assignee: AT&T Inc
•
Filing: 1967-05-26
•
Granted: 1970-05-12
•
Expires: 1987-05-26
Abstract
No abstract record available.
Inventors
- 👤 Burton R Saltzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:59
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/26; H04L27/2601; H04L27/2626; H04L27/2627; H04L27/2637; H04L27/2647; H04L27/2649; H04L27/2653
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2905812A
Cited
US3163718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |