Patent US3511051A successfully refreshed from Google Patents.
US3511051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed governing systems for steam turbines
Assignee: Rolls Royce Power Engineering PLC
•
Filing: 1967-11-02
•
Granted: 1970-05-12
•
Expires: 1987-11-02
Abstract
No abstract record available.
Inventors
- 👤 John Mackenzie Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:22
CPC Classifications
F; F01; F01K; F01K7/00; F01K7/16; F01K7/22; F01K7/24; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2586511A
Cited
US2863289A
Cited
US2811837A
Cited
US2830441A
Cited
US2902831A
Cited
US3097488A
Cited
US3097489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |