US3518023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standby control system for multi-engine power plants
Assignee: Rolls Royce PLC
•
Filing: 1968-06-17
•
Granted: 1970-06-30
•
Expires: 1988-06-17
Abstract
No abstract record available.
Inventors
- 👤 Colin G Britten
- 👤 Patrick John Ashmole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:40
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/20; F02C3/30; F02C3/305; F02C9/00; F02C9/26; F02C9/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB617729A
Cited
US2595345A
Cited
US2795107A
Cited
US2768504A
Cited
US2737776A
Cited
US2912822A
Cited
US2942416A
Cited
US3049880A
Cited
US3434281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |