US2947986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiometric sextant stabilization system
Assignee: Collins Radio Co
•
Filing: 1954-02-05
•
Granted: 1960-08-02
•
Expires: 1974-02-05
Abstract
No abstract record available.
Inventors
- 👤 Gene R Marner
- 👤 Richard M Ringoen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:31
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/18; G; G06; G06G; G06G7/00; G06G7/48; G06G7/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1926251A
Cited
US2660793A
Cited
US2480208A
Cited
US2604698A
Cited
US2649264A
Cited
US2705792A
Cited
US2762123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |