Patent US3530666A successfully refreshed from Google Patents.
US3530666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine fuel system
Assignee: Rolls Royce PLC
•
Filing: 1967-12-14
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Granted: 1970-09-29
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Expires: 1987-12-14
Abstract
No abstract record available.
Inventors
- 👤 Walter George Cross
- 👤 Wesley Boyd Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:35
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/263; F02C9/28; F05; F05D; F05D2270/00; F05D2270/30; F05D2270/301; F05D2270/3015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2613029A
Cited
US2846846A
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US2873576A
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US2947141A
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US2939280A
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US3091925A
Cited
US3040529A
Cited
US3310939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |