US2968288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of burning slag forming fuel in furnaces
Assignee: Foster Wheeler Inc
•
Filing: 1959-03-18
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Granted: 1961-01-17
•
Expires: 1979-03-18
Abstract
No abstract record available.
Inventors
- 👤 Robert J Zoschak
- 👤 Ernest L Daman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
F; F23; F23C; F23C6/00; F23C2201/00; F23C2201/40; F23C2201/401; F23C2700/00; F23C2700/06; F23C2700/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |