US2517985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chimney for liquid fuel burners
Assignee: Individual
•
Filing: 1948-06-22
•
Granted: 1950-08-08
•
Expires: 1968-06-22
Abstract
No abstract record available.
Inventors
- 👤 Malcom A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:39
CPC Classifications
F; F23; F23D; F23D3/00; F23D2900/00; F23D2900/31016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1285936A
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US1428212A
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US1427704A
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US1441880A
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US1452650A
Cited
US1663753A
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US1932597A
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US2024693A
Cited
US1975922A
Cited
US2199826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |