US2660032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine cycle employing secondary fuel as a coolant
Assignee: Individual
•
Filing: 1947-10-04
•
Granted: 1953-11-24
•
Expires: 1967-10-04
Abstract
No abstract record available.
Inventors
- 👤 Rosenthal Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:15
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/14; F02C6/00; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/91; Y10S585/911; Y10S585/919; Y10S585/921; Y10S585/922; Y10S585/949; Y10S585/955
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) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |