US2948157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopically stabilized platforms
Assignee: Sperry Gyroscope Co Ltd
•
Filing: 1951-05-12
•
Granted: 1960-08-09
•
Expires: 1971-05-12
Abstract
No abstract record available.
Inventors
- 👤 Sedgfield Hugh Brougham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:01
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221; Y10T74/1225
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1743533A
Cited
US1480637A
Cited
US1501886A
Cited
US1950517A
Cited
US2208207A
Cited
US2411087A
Cited
US2598672A
Cited
US2573626A
Cited
US2517612A
Cited
US2462081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |