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Patent US2888804A successfully refreshed from Google Patents.
US2888804A
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Louvred coolant fluid ash quenching systems for pressurized combustors utilizing powdered coal
Assignee: Bituminous Coal Research Inc
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Filing: 1955-04-04
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Granted: 1959-06-02
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 John I Yellott
- 👤 Peter R Broadley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:27
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027; F22; F22B; F22B1/00; F22B1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |