Patent US2678090A successfully refreshed from Google Patents.
US2678090A
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US
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Self-checking burner safety control apparatus
Assignee: Honeywell Inc
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Filing: 1949-01-14
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Granted: 1954-05-11
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Expires: 1969-01-14
Abstract
No abstract record available.
Inventors
- 👤 Henry L Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:05
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N2227/00; F23N2227/12; F23N2227/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2370847A
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US2299501A
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US2368893A
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US2406185A
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US2537293A
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US2610677A
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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) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |