US2788951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling of turbine rotors
Assignee: Power Jets Research and Development Ltd
•
Filing: 1952-02-14
•
Granted: 1957-04-16
•
Expires: 1972-02-14
Abstract
No abstract record available.
Inventors
- 👤 Flint John Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:47
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F01D5/082; F05; F05D; F05D2240/00; F05D2240/60; F05D2240/63
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1820725A
Cited
US1880747A
Cited
US1938688A
Cited
US2339779A
Cited
US2575682A
Cited
US2611532A
Cited
US2657901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |