US2717563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontal cyclone furnace
Assignee: Babcock and Wilcox Co
•
Filing: 1950-12-27
•
Granted: 1955-09-13
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Sifrin Andreas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:53
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/006; F23C3/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR847570A
Cited
US812193A
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US1180792A
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US1532041A
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US1713817A
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US1926637A
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GB302255A
Cited
US1831466A
Cited
GB305270A
Cited
US1852968A
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US2357301A
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US2516141A
Cited
US2527934A
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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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |