US2859934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbines
Assignee: Bristol Siddeley Engines Ltd
•
Filing: 1954-07-16
•
Granted: 1958-11-11
•
Expires: 1974-07-16
Abstract
No abstract record available.
Inventors
- 👤 Halford Frank Bernard
- 👤 Gay Arnold Roydon Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:45
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2584899A
Cited
US2651492A
Cited
US2625013A
Cited
US2625793A
Cited
US2625367A
Cited
GB676314A
Cited
US2685429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |