Patent US2987879A successfully refreshed from Google Patents.
US2987879A
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Jet propulsion nozzle with noise reducing means
Assignee: Rolls Royce PLC
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Filing: 1957-10-18
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Granted: 1961-06-13
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Expires: 1977-10-18
Abstract
No abstract record available.
Inventors
- 👤 Brown David Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:46
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/08; F02K1/38; F02K1/383; F02K1/54; F02K1/56; F02K1/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735254A
Cited
US1439506A
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US2293632A
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US2619821A
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US2483401A
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US2671620A
Cited
GB733727A
Cited
US2865169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |