US2653445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbocompressor jet-propulsion apparatus and adjustable nozzle therefor
Assignee: De Havilland Aircraft Co Ltd
•
Filing: 1946-06-19
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Granted: 1953-09-29
•
Expires: 1966-06-19
Abstract
No abstract record available.
Inventors
- 👤 Halford Frank Bernard
- 👤 Moult Eric Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:20
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/38; F02K1/06; F02K1/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US719819A
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US1140259A
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US2102559A
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GB577949A
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US2408099A
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US2487588A
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US2501633A
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US2402333A
Cited
US2418488A
Cited
US2503006A
Cited
FR82468E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |