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Patent US2545537A successfully refreshed from Google Patents.
US2545537A
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US
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Means for intercepting the escape of ash to the atmosphere
Assignee: Individual
•
Filing: 1946-11-20
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Granted: 1951-03-20
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Expires: 1966-11-20
Abstract
No abstract record available.
Inventors
- 👤 Edward C Addison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:52
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US529625A
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US782190A
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US1504386A
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US1841556A
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US1895652A
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US2268540A
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GB574472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |