US2564703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Omni-azimuth guidance system
Assignee: Unisys Corp
•
Filing: 1947-10-29
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Granted: 1951-08-21
•
Expires: 1967-10-29
Abstract
No abstract record available.
Inventors
- 👤 George B Litchford
- 👤 Lyman Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:41
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US755840A
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US1990649A
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US2144203A
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US2252699A
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US2302102A
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US2377902A
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US2406396A
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US2420605A
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US2422110A
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US2513315A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |