US2795200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for burning solid fuel
Assignee: Babcock and Wilcox Co
•
Filing: 1953-02-25
•
Granted: 1957-06-11
•
Expires: 1973-02-25
Abstract
No abstract record available.
Inventors
- 👤 Urquhart William Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:22
CPC Classifications
F; F23; F23H; F23H11/00; F23H11/10; F23K; F23K3/00; F23K3/16; F23K3/18; F23L; F23L1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1393826A
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US1532103A
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US1714678A
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GB365354A
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DE647417C
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US2302173A
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US2386336A
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US2483728A
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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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |