US2989849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control system for a twin spool gas turbine power plant
Assignee: RTX Corp
•
Filing: 1951-08-04
•
Granted: 1961-06-27
•
Expires: 1971-08-04
Abstract
No abstract record available.
Inventors
- 👤 Bruce N Torell
- 👤 Robert E Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:28
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/32; F02C9/16; F02C9/20; F02C9/22; F02C9/28; F05; F05D; F05D2270/00; F05D2270/30; F05D2270/301; F05D2270/303; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87121; Y10T137/87129; Y10T137/87137; Y10T137/87917; Y10T137/88022; Y10T137/8803
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |