US2882681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-jacketed annular combustion chambers for jet-propulsion engines, gas turbines or like prime movers
Assignee: ZF International UK Ltd
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Filing: 1954-05-28
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Granted: 1959-04-21
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey J Hudson
- 👤 William E Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:03
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/045; F23R3/10; F23R3/12; F23R3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |