US2662589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control system for liquid fuel burners
Assignee: Individual
•
Filing: 1947-09-18
•
Granted: 1953-12-15
•
Expires: 1967-09-18
Abstract
No abstract record available.
Inventors
- 👤 Fred B Aubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:24
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N1/00; F23N1/005; F23N5/02; F23N5/203; F23N5/24; F23N5/242; F23N2223/00; F23N2223/08; F23N2227/00; F23N2227/02; F23N2227/28; F23N2227/36; F23N2235/00; F23N2235/12; F23N2235/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1382721A
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US1594020A
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US1968360A
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US1901271A
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US1985991A
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US2108770A
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US2159257A
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US2301446A
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US2406185A
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US2438275A
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US2432143A
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US2460451A
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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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |