US2869322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control system for gas turbine engines under steady-state operating conditions
Assignee: Unisys Corp
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Filing: 1954-02-18
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Granted: 1959-01-20
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Expires: 1974-02-18
Abstract
No abstract record available.
Inventors
- 👤 Donald L Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/32; F02C7/00; F02C7/22; F02C7/232; F02C7/236; F02C9/263; F02C9/28; F05; F05D; F05D2270/00; F05D2270/30; F05D2270/301; F05D2270/3015
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |