Patent US20020032477A1 successfully refreshed from Google Patents.
US3005185A
Expired / Lapsed
US
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Airborne approach aid
Assignee: Australian Government
•
Filing: 1957-06-24
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Granted: 1961-10-17
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Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Cumming Ronald William
- 👤 Lane John Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:58
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2178637A
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US2262245A
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US2426184A
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US2495296A
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US2613352A
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US2738491A
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US2887927A
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US2884829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |