US2652792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized combustion and ash removal system for coal-fired gas turbine power plants
Assignee: Bituminous Coal Research Inc
•
Filing: 1951-11-23
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Granted: 1953-09-22
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Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
- 👤 John I Yellott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:48
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/20; F02C3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB469339A
Cited
US2065385A
Cited
US2399884A
Cited
US2364044A
Cited
US2498761A
Cited
US2448561A
Cited
US2583920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |