US3358748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam turbine cooling system
Assignee: English Electric Co Ltd
•
Filing: 1965-08-19
•
Granted: 1967-12-19
•
Expires: 1985-08-19
Abstract
No abstract record available.
Inventors
- 👤 Christopher Peter James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:52
CPC Classifications
F; F28; F28B; F28B9/00; F01; F01K; F01K9/00; F01K9/003; F28B9/04; Y; Y10; Y10S; Y10S165/00; Y10S165/90
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |