Patent US2494816A successfully refreshed from Google Patents.
US2494816A
Expired / Lapsed
US
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Hot-blast stove
Assignee: Carnegie Illinois Steel Corp
•
Filing: 1945-05-18
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Granted: 1950-01-17
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Expires: 1965-05-18
Abstract
No abstract record available.
Inventors
- 👤 Fred E Kling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:41
CPC Classifications
C; C21; C21B; C21B9/00; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/03; Y10S165/032; Y10S165/034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US732867A
Cited
US1168014A
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US1825259A
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US1849657A
Cited
US1904237A
Cited
US2136993A
Cited
US2376099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |