US2994472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tip clearance control system for turbomachines
Assignee: General Electric Co
•
Filing: 1958-12-29
•
Granted: 1961-08-01
•
Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jacobus M Botje
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:47
CPC Classifications
F; F01; F01D; F01D21/00; F01D21/04; F01D11/00; F01D11/08; F01D11/14; F01D11/20; F01D11/24; G; G01; G01B; G01B7/00; G01B7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US785466A
Cited
US1527910A
Cited
GB486340A
Cited
US2692724A
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US2429990A
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US2447957A
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US2574190A
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US2598176A
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US2645410A
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US2718350A
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US2685429A
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GB698898A
Cited
US2665058A
Cited
US2634090A
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US2742224A
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US2796231A
Cited
US2828105A
Cited
US2840343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |