Patent US2812899A successfully refreshed from Google Patents.
US2812899A
Expired / Lapsed
US
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Intake sprinkler for gas turbine engines
Assignee: AV Roe Canada Ltd
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Filing: 1950-08-10
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Granted: 1957-11-12
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Expires: 1970-08-10
Abstract
No abstract record available.
Inventors
- 👤 Meschino Ronald Guerin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:13
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/047; F01; F01D; F01D25/00; F01D25/002; F01D25/02; F02C3/00; F02C3/20; F02C3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2278206A
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US2278640A
Cited
US2406473A
Cited
US2551697A
Cited
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Cited
US2469375A
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US2566319A
Cited
GB634267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |