Patent US2991961A successfully refreshed from Google Patents.
US2991961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet aircraft configuration
Assignee: Individual
•
Filing: 1959-05-06
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Granted: 1961-07-11
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Francis M Rogallo
- 👤 John M Riebe
- 👤 John G Lowry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:10
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/54; F02K1/56; F02K1/563; B; B64; B64C; B64C23/00; B64C23/005; B64D; B64D27/00; B64D27/02; B64D27/16; B64D27/18; F02K1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2396911A
Cited
FR1178843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |