US2650073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined regenerator and precooler for gas turbine cycles
Assignee: Alstom Power Inc
•
Filing: 1949-06-25
•
Granted: 1953-08-25
•
Expires: 1969-06-25
Abstract
No abstract record available.
Inventors
- 👤 Holm Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:09
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/143; F28; F28D; F28D9/00; F28D9/0012; F28D9/0018; F28D9/0093; F28F; F28F2250/00; F28F2250/10; F28F2250/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1917275A
Cited
FR688634A
Cited
GB353087A
Cited
US2170145A
Cited
US2222496A
Cited
US2236750A
Cited
US2316273A
Cited
US2372079A
Cited
US2423175A
Cited
US2430227A
Cited
US2421371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |