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US2659451A
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US
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Centrifugal gas cleaner
Assignee: Fluor Corp
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Filing: 1950-08-18
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Granted: 1953-11-17
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Expires: 1970-08-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:50
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/08; B04C; B04C3/00; B04C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR962402A
Cited
GB190313279A
Cited
US1372714A
Cited
US1970077A
Cited
US2413324A
Cited
GB555908A
Cited
US2506298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |