US2688656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for checking recorded information
Assignee: STC PLC
•
Filing: 1950-11-24
•
Granted: 1954-09-07
•
Expires: 1970-11-24
Abstract
No abstract record available.
Inventors
- 👤 Wright Esmond Philip Goodwin
- 👤 Weir Donald Adams
- 👤 Rice Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:52
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/16; G06F11/1666; G06F11/167; G06F11/1608; G06F11/1612; G06F3/00; G06F3/06; G06F3/0601; G06F7/00; G06F7/02; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1816; H; H04; H04L; H04L17/00; H04L17/16; H04L17/30; G06F3/0668; G06F3/0671; G06F3/0673; G06F3/0682
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |