Patent US2879762A successfully refreshed from Google Patents.
US2879762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burner control circuit
Assignee: American Air Filter Co Inc
•
Filing: 1956-07-26
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Granted: 1959-03-31
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Expires: 1976-07-26
Abstract
No abstract record available.
Inventors
- 👤 Aubrey H Robson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:07
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2704571A
Cited
US2432314A
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US2503260A
Cited
US2569877A
Cited
US2596290A
Cited
US2716975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |