Patent US2696597A successfully refreshed from Google Patents.
US2696597A
Expired / Lapsed
US
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Apparatus for facilitating the piloting of aircraft
Assignee: Government of France
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Filing: 1953-02-09
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Granted: 1954-12-07
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Expires: 1973-02-09
Abstract
No abstract record available.
Inventors
- 👤 Chombard Pierre Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:03
CPC Classifications
B; B64; B64D; B64D45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2188606A
Cited
US2245478A
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US2404603A
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US2424570A
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US2504114A
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US2578177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |