Patent US2493960A successfully refreshed from Google Patents.
US2493960A
Expired / Lapsed
US
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Method and apparatus for burning fine solids
Assignee: Individual
•
Filing: 1945-12-11
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Granted: 1950-01-10
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Expires: 1965-12-11
Abstract
No abstract record available.
Inventors
- 👤 Charles S Gladden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:00
CPC Classifications
F; F23; F23B; F23B70/00; F23B30/00; F23B30/02; F23B30/06; F23B30/08; F23B80/00; F23B80/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US264905A
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US759357A
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US738132A
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US806127A
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US867068A
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US1898479A
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US1943949A
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US1747676A
Cited
AT127062B
Cited
GB384877A
Cited
US2029285A
Cited
US2386336A
Cited
US2400797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |