Patent US2648519A successfully refreshed from Google Patents.
US2648519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling combustion turbines
Assignee: Individual
•
Filing: 1948-04-22
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Granted: 1953-08-11
•
Expires: 1968-04-22
Abstract
No abstract record available.
Inventors
- 👤 Campini Secondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F01D5/082; F01D5/12; F01D5/14; F01D5/141; F01D5/146; F01D5/30; F01D5/3023; F01D5/3046; F01D5/3069; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2432359A
Cited
DE346599C
Cited
GB337687A
Cited
DE491738C
Cited
GB452412A
Cited
US2109997A
Cited
US2243467A
Cited
US2413225A
Cited
US2445661A
Cited
US2401826A
Cited
US2399865A
Cited
FR919016A
Cited
US2488867A
Cited
US2552239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |