US2812212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel burner
Assignee: Babcock and Wilcox Co
•
Filing: 1951-04-17
•
Granted: 1957-11-05
•
Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Charles E Rogers
- 👤 Henry P Markant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB150761A
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US1462680A
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US1526006A
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GB322257A
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US1843821A
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US1884931A
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US2117388A
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GB465691A
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US2306141A
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US2240161A
Cited
US2335317A
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US2576373A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |