US2657743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control system for burner and control device therefor
Assignee: Individual
•
Filing: 1950-03-07
•
Granted: 1953-11-03
•
Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 Fred B Aubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:15
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/22; F23N2233/00; F23N2233/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2472398A
Cited
US2174275A
Cited
US2185752A
Cited
US2388666A
Cited
US2393599A
Cited
US2504174A
Cited
US2445531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |