US2779654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphical recording systems
Assignee: Ferranti International PLC
•
Filing: 1950-11-02
•
Granted: 1957-01-29
•
Expires: 1970-11-02
Abstract
No abstract record available.
Inventors
- 👤 Williamson David Theodo Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:49
CPC Classifications
H; H04; H04L; H04L21/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1326727A
Cited
US907235A
Cited
US1711137A
Cited
US2143875A
Cited
US2148578A
Cited
US2213886A
Cited
US2206538A
Cited
US2465976A
Cited
US2573279A
Cited
US2637024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |