US2859935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling of turbines
Assignee: Power Jets Research and Development Ltd
•
Filing: 1952-02-14
•
Granted: 1958-11-11
•
Expires: 1972-02-14
Abstract
No abstract record available.
Inventors
- 👤 Roesch Georges Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/06; F01D9/065; F01D25/00; F01D25/08; F01D25/12; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F01D5/084; F01D5/12; F01D5/14; F01D5/18; F01D5/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR824013A
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US2414551A
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US2414788A
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US2439447A
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US2575682A
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US2611532A
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FR919016A
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US2584899A
Cited
US2488783A
Cited
US2657901A
Cited
US2603453A
Cited
GB612097A
Cited
US2606741A
Cited
US2680001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |