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US2986327A
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US
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Axial flow centrifugal compressor and surge control system therefor
Assignee: Fairchild Engine and Airplane Corp
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Filing: 1957-11-04
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Granted: 1961-05-30
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Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 David U Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:07
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US819273A
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US1281216A
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US2000721A
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US2325477A
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US2398619A
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US2470565A
Cited
US2604109A
Cited
US2660366A
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US2861585A
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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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |