Patent US2897885A successfully refreshed from Google Patents.
US2897885A
Expired / Lapsed
US
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Fluid fuel burner
Assignee: Silent Glow Oil Burner Corp
•
Filing: 1954-06-29
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Granted: 1959-08-04
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Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Rallston M Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:55
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2250806A
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US2210366A
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US2298745A
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US2446744A
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US2469272A
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US2460370A
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US2599153A
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |