US2750505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic frequency control
Assignee: The General Electric Company PLC
•
Filing: 1951-07-28
•
Granted: 1956-06-12
•
Expires: 1971-07-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest M Hickin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:05
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/02; H03L7/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2564005A
Cited
US2462294A
Cited
US2564059A
Cited
US2584608A
Cited
US2559719A
Cited
US2699503A
Cited
US2631269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |