US2741423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial-flow compressors
Assignee: Rolls Royce PLC
•
Filing: 1952-03-07
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Granted: 1956-04-10
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Expires: 1972-03-07
Abstract
No abstract record available.
Inventors
- 👤 Lombard Adrian Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:51
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207; F04D27/0215; F04D27/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111498A
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GB214954A
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FR900371A
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US2418801A
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GB595351A
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US2398619A
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GB579976A
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US2527732A
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US2478423A
Cited
US2570847A
Cited
US2653754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |