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Patent US3393039A successfully refreshed from Google Patents.
US3393039A
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US
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Burner control system
Assignee: Emerson Electric Co
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Filing: 1966-05-11
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Granted: 1968-07-16
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Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Raymond W Eldridge
- 👤 Chung L Feng
- 👤 James A Wright
- 👤 John A Ancona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:42
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/203; F23N5/02; F23N5/06; F23N5/062; F23N2223/00; F23N2223/22; F23N2223/24; F23N2227/00; F23N2227/28; F23N2239/00; F23N2239/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3045148A
Cited
US3204685A
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US3238992A
Cited
US3338288A
Cited
US3276507A
Cited
US3318358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |