Patent US2515845A successfully refreshed from Google Patents.
US2515845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame pocket fluid fuel burner
Assignee: Shell Development Co
•
Filing: 1947-05-13
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Granted: 1950-07-18
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Expires: 1967-05-13
Abstract
No abstract record available.
Inventors
- 👤 Hendrik K J Van Den Bussche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:32
CPC Classifications
F; F23; F23C; F23C9/00; F23C9/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1334309A
Cited
US1700592A
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US1434256A
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FR817071A
Cited
US2215079A
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US2207010A
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US2302751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |