US2701274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal predicting apparatus
Assignee: AT&T Inc
•
Filing: 1950-06-29
•
Granted: 1955-02-01
•
Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
H; H03; H03M; H03M3/00; H03M3/04; H04; H04B; H04B1/00; H04B1/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2310692A
Cited
GB605128A
Cited
US2580421A
Cited
US2552386A
Cited
US2657253A
Cited
US2236134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |