Patent US2711295A successfully refreshed from Google Patents.
US2711295A
Expired / Lapsed
US
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Convertible aircraft with disk shaped airfoil
Assignee: Individual
•
Filing: 1952-08-11
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Granted: 1955-06-21
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Expires: 1972-08-11
Abstract
No abstract record available.
Inventors
- 👤 Adolphe C Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:12
CPC Classifications
B; B64; B64C; B64C39/00; B64C39/001; B64C39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR409193A
Cited
US2317340A
Cited
US2262613A
Cited
US2604951A
Cited
US2377835A
Cited
US2521684A
Cited
US2605608A
Cited
FR931296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |