Patent US2238389A successfully refreshed from Google Patents.
Patent US2927725A successfully refreshed from Google Patents.
US2927725A
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Anti-icing means for a gas turbine engine of an aircraft
Assignee: Armstrong Siddeley Motors Ltd
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Filing: 1954-06-29
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Granted: 1960-03-08
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Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Horace S Rainbow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:08
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/047; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/162
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |