Patent US3416041A successfully refreshed from Google Patents.
US3416041A
Expired / Lapsed
US
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Flame sensor quench circuits for combustion control systems
Assignee: Electronics Corp of America
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Filing: 1965-09-02
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Granted: 1968-12-10
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Giuffrida Philip
- 👤 Pratt John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:03
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3274580A
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US3196273A
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US3299361A
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US3263730A
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US3336479A
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US3342995A
Cited
US3286185A
Cited
US3286093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |