Patent FR335156A successfully refreshed from Google Patents.
US2953124A
Expired / Lapsed
US
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Open pass vapor generating and superheating unit with gas recirculation to open pass
Assignee: Babcock and Wilcox Co
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Filing: 1954-06-22
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Granted: 1960-09-20
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Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Charles L Marquez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:22
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/06; F22B; F22B35/00; F22B35/002; F22G5/04; F23; F23B; F23B2700/00; F23B2700/01
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |