US2823378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft navigation instrument
Assignee: Unisys Corp
•
Filing: 1954-04-07
•
Granted: 1958-02-11
•
Expires: 1974-04-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Reedy
- 👤 Reginald V Craddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:49
CPC Classifications
B; B64; B64D; B64D45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264279A
Cited
US2364731A
Cited
US2424570A
Cited
US2467972A
Cited
US2613352A
Cited
US2685226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |