US2524868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace comprising coking and combustion grates
Assignee: Individual
•
Filing: 1946-04-22
•
Granted: 1950-10-10
•
Expires: 1966-04-22
Abstract
No abstract record available.
Inventors
- 👤 James A Worsham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:07
CPC Classifications
F; F23; F23B; F23B1/00; F23B1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1328116A
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US1456138A
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US1715961A
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US1945224A
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US1983709A
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US2216287A
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US2295781A
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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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |