Patent US2528671A successfully refreshed from Google Patents.
US2528671A
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US
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Furnace combustion chamber closure with fluid jet gas escape prevention means
Assignee: Babcock and Wilcox Co
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Filing: 1945-09-21
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Granted: 1950-11-07
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Expires: 1965-09-21
Abstract
No abstract record available.
Inventors
- 👤 Eugene H Selnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:54
CPC Classifications
F; F23; F23M; F23M11/00; F23M11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US241433A
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US667489A
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US740757A
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US805295A
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US1379873A
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US1448228A
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US1973171A
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US2112063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |