Patent US1316152A successfully refreshed from Google Patents.
Patent US2957045A successfully refreshed from Google Patents.
US2957045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid lock-in flywheel synchronizing system
Assignee: AT&T Inc
•
Filing: 1957-10-24
•
Granted: 1960-10-18
•
Expires: 1977-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert D Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:09
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/20; H04L25/24; H04L25/242; H04L7/00; H04L7/02; H04L7/027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |