US3392529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft provided with a gas turbine vertical lift engine
Assignee: Rolls Royce PLC
•
Filing: 1966-07-08
•
Granted: 1968-07-16
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Expires: 1986-07-08
Abstract
No abstract record available.
Inventors
- 👤 Pike Malcolm Roy
- 👤 Dawson Lindsay Grahame
- 👤 Colville Francis Jeffrey
- 👤 Brown David Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:02
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/40; F02K1/42; B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0058; B64C29/0075; F02K1/002; F02K1/38; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2986877A
Cited
US2879014A
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US3025667A
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GB836175A
Cited
GB894299A
Cited
US3050937A
Cited
US2999656A
Cited
GB862560A
Cited
US3143184A
Cited
US3333772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |