US2686631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coolant injection system for gas turbines
Assignee: RTX Corp
•
Filing: 1948-05-08
•
Granted: 1954-08-17
•
Expires: 1968-05-08
Abstract
No abstract record available.
Inventors
- 👤 Donald J Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/04; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR745590A
Cited
GB190503607A
Cited
GB111381A
Cited
US1400813A
Cited
US1824893A
Cited
GB372377A
Cited
US2438998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |