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Patent US2920449A successfully refreshed from Google Patents.
US2920449A
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US
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Fuel injection means for feeding fuel to an annular combustion chamber of a gas turbine engine with means for dividing the air flow
Assignee: Rolls Royce PLC
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Filing: 1955-07-11
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Granted: 1960-01-12
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Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Johnson Francis Murray
- 👤 Carlisle Denis Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:25
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23D; F23D11/00; F23D11/10; F23R3/02; F23R3/04; F23R3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US718931A
Cited
US901829A
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US2526410A
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US2679137A
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US2657532A
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GB657789A
Cited
US2780060A
Cited
BE525083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |