US3069507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autocorrelation vocoder
Assignee: AT&T Inc
•
Filing: 1960-08-09
•
Granted: 1962-12-18
•
Expires: 1980-08-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward E David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:46
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/02; G10L19/0212; G10L25/00; G10L25/03; G10L25/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2908761A
Cited
US2928901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |