US2860851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stage turbine rotor assemblies
Assignee: Bristol Siddeley Engines Ltd
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Filing: 1953-12-11
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Granted: 1958-11-18
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Expires: 1973-12-11
Abstract
No abstract record available.
Inventors
- 👤 Halford Frank Bernard
- 👤 Wilson William Ker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:06
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/08; F01D25/12; F01D25/125; F01D5/00; F01D5/02; F01D5/06; F01D5/08
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |