US2772856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural elements for turbo-machines such as compressors or turbines of gasturbineengines
Assignee: Rolls Royce PLC
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Filing: 1953-07-03
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Granted: 1956-12-04
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Expires: 1973-07-03
Abstract
No abstract record available.
Inventors
- 👤 Kent Nelson Hector
- 👤 Armer Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042; F01D9/044; F23; F23R; F23R3/00; F23R3/42; F23R3/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |