Patent US2804748A successfully refreshed from Google Patents.
US2804748A
Expired / Lapsed
US
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Gas turbine with clutch control
Assignee: Individual
•
Filing: 1951-04-18
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Granted: 1957-09-03
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Expires: 1971-04-18
Abstract
No abstract record available.
Inventors
- 👤 David W Hutchinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:28
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/36; F02C3/00; F02C3/04; F02C3/107; F02C3/113; F05; F05D; F05D2220/00; F05D2220/30; F05D2220/32; F05D2220/324; F05D2260/00; F05D2260/40; F05D2260/402; F05D2260/4023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2012377A
Cited
US2280835A
Cited
US2326072A
Cited
US2374510A
Cited
US2402725A
Cited
GB595357A
Cited
US2651920A
Cited
CH270945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |