US2808012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burning apparatus
Assignee: Babcock and Wilcox Co
•
Filing: 1952-03-10
•
Granted: 1957-10-01
•
Expires: 1972-03-10
Abstract
No abstract record available.
Inventors
- 👤 Schindler Ewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/006; F23C3/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US901232A
Cited
US1823117A
Cited
US1776841A
Cited
GB302255A
Cited
GB305270A
Cited
DE519173C
Cited
US2151079A
Cited
US2357303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |