US3507993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Situation display for aircraft navigation employing crt display of the mean course line
Assignee: United States Department of the Navy
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Filing: 1968-01-04
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Granted: 1970-04-21
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Expires: 1988-01-04
Abstract
No abstract record available.
Inventors
- 👤 William G Mulley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/18; G; G01; G01C; G01C21/00; G01C21/20; G01C21/22; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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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) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |