US3003316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling means for forked exhaust ducts of gas turbine engines
Assignee: Rolls Royce PLC
•
Filing: 1954-02-09
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Granted: 1961-10-10
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Expires: 1974-02-09
Abstract
No abstract record available.
Inventors
- 👤 Kerry Thomas Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:35
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/52; F02K1/78; F02K1/82; F02K1/822; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2236426A
Cited
GB588847A
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GB585557A
Cited
US2633703A
Cited
US2641422A
Cited
US2541108A
Cited
US2651173A
Cited
US2748564A
Cited
US2693082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |