US2876716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for burning solid fuels
Assignee: Babcock and Wilcox Co
•
Filing: 1952-09-25
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Granted: 1959-03-10
•
Expires: 1972-09-25
Abstract
No abstract record available.
Inventors
- 👤 Warren S Blundin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:14
CPC Classifications
F; F22; F22B; F22B21/00; F22B21/02; F22B21/14; F23; F23H; F23H11/00; F23H11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR614640A
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US1278325A
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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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |