Patent US2883948A successfully refreshed from Google Patents.
US2883948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber with combined pulverized fuel and gas firing
Assignee: Babcock and Wilcox Co
•
Filing: 1952-08-07
•
Granted: 1959-04-28
•
Expires: 1972-08-07
Abstract
No abstract record available.
Inventors
- 👤 Seidl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:20
CPC Classifications
F; F23; F23C; F23C5/00; F23C5/08; F23C5/32; F23C1/00; F23C1/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1427176A
Cited
US2354999A
Cited
US1766989A
Cited
US1966054A
Cited
US2064366A
Cited
US2380169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |