Patent US6245020B1 successfully refreshed from Google Patents.
US2954614A
Expired / Lapsed
US
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Flight training apparatus for hovering type aircraft
Assignee: Curtiss Wright Corp
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Filing: 1957-12-02
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Granted: 1960-10-04
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Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Vogt Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:07
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/46; B; B64; B64C; B64C39/00; B64C39/02; B64C39/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1397998A
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US1935271A
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US1825363A
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US2318260A
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US2453857A
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US2471544A
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US2730398A
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GB748059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |