Patent US2928650A successfully refreshed from Google Patents.
US2928650A
Expired / Lapsed
US
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Rotor assemblies for gas turbine engines
Assignee: Bristol Aero Engines Ltd
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Filing: 1954-11-15
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Granted: 1960-03-15
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Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Hooker Stanley George
- 👤 Clark Kenneth William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F01D5/021; F01D5/30; F01D5/3007; F01D5/3015; H; H03; H03L; H03L1/00
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |