US2879727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace sawdust burners
Assignee: Individual
•
Filing: 1953-06-29
•
Granted: 1959-03-31
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:04
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/10; F23G7/105; F23H; F23H17/00; F23H17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US497559A
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US1806916A
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US2183648A
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US2530522A
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US755277A
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US1641545A
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US1758478A
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US1818503A
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US1832223A
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US2165802A
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GB503570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |