US2861526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burning apparatus
Assignee: Babcock and Wilcox Co
•
Filing: 1952-11-19
•
Granted: 1958-11-25
•
Expires: 1972-11-19
Abstract
No abstract record available.
Inventors
- 👤 Kuppers Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:15
CPC Classifications
F; F23; F23C; F23C5/00; F23C5/08; F23C5/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE397548C
Cited
US1369200A
Cited
US1618808A
Cited
US1679724A
Cited
DE539455C
Cited
US1926637A
Cited
US1734669A
Cited
US1966054A
Cited
US1866404A
Cited
US2263433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |