Patent US2686225A successfully refreshed from Google Patents.
US2686225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for storing and retransmitting impulses
Assignee: British Telecommunications PLC
•
Filing: 1950-06-16
•
Granted: 1954-08-10
•
Expires: 1970-06-16
Abstract
No abstract record available.
Inventors
- 👤 Baker George Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:50
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/23
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2093157A
Cited
US2454652A
Cited
US2502415A
Cited
US2464420A
Cited
US2501637A
Cited
US2498688A
Cited
US2527652A
Cited
US2523365A
Cited
US2547638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |