US2686222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric signal translating and recording device
Assignee: Ferranti International PLC
•
Filing: 1952-02-14
•
Granted: 1954-08-10
•
Expires: 1972-02-14
Abstract
No abstract record available.
Inventors
- 👤 Donald F Walker
- 👤 Maurice K Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:19
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US352143A
Cited
US1311384A
Cited
US1381317A
Cited
US1350334A
Cited
US1547964A
Cited
US2342886A
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 |