Patent US2668413A successfully refreshed from Google Patents.
US2668413A
Expired / Lapsed
US
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Gas turbine power plant with duplexed blading
Assignee: Individual
•
Filing: 1948-03-15
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Granted: 1954-02-09
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Expires: 1968-03-15
Abstract
No abstract record available.
Inventors
- 👤 James V Giliberty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:46
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/06; F02C3/073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190514641A
Cited
US885032A
Cited
AT51150B
Cited
US2391779A
Cited
CH215484A
Cited
US2413225A
Cited
US2414410A
Cited
GB577017A
Cited
US2489683A
Cited
US2398140A
Cited
US2548975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |