Patent US2750557A successfully refreshed from Google Patents.
Patent US2194937A successfully refreshed from Google Patents.
Patent US2691867A successfully refreshed from Google Patents.
US2691867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control system for turbojet engines
Assignee: Westinghouse Air Brake Co
•
Filing: 1950-04-25
•
Granted: 1954-10-19
•
Expires: 1970-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert M Kendig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:44
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2227666A
Cited
US2422808A
Cited
US2499232A
Cited
US2404428A
Cited
US2535202A
Cited
US2485514A
Cited
US2581275A
Cited
US2531780A
Cited
US2521736A
Cited
US2581276A
Cited
GB634095A
Cited
US2503048A
Cited
US2479813A
Cited
GB620161A
Cited
US2474033A
Cited
US2538582A
Cited
US2544427A
Cited
US2524445A
Cited
US2520547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |