Patent US2941361A successfully refreshed from Google Patents.
US2941361A
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US
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Combustion apparatus having a flame stabilizing baffle
Assignee: National Research Development Corp UK
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Filing: 1953-10-12
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Granted: 1960-06-21
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Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Dudley B Spalding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:50
CPC Classifications
F; F23; F23C; F23C13/00; F23M; F23M9/00; F23R; F23R3/00; F23R3/02; F23R3/16; F23R3/18; F23R3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CA483784A
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US2622396A
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US2592110A
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US2548087A
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US2657582A
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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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |