Patent US2920609A successfully refreshed from Google Patents.
US2920609A
Expired / Lapsed
US
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Forced flow pressure fired vapor generator and superheater
Assignee: Babcock and Wilcox Co
•
Filing: 1953-04-20
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Granted: 1960-01-12
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Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond F Iager
- 👤 Ernest C Huge
- 👤 Johannes H Ammon
- 👤 Roland T Bryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:18
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB638552A
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US1948538A
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US2006403A
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US2086812A
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US2184845A
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US2183893A
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US2346179A
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US2547135A
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US2443841A
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US2641233A
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US2568024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |