US2427178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot responsive safety control for liquid fuel burners
Assignee: Individual
•
Filing: 1943-12-02
•
Granted: 1947-09-09
•
Expires: 1963-12-02
Abstract
No abstract record available.
Inventors
- 👤 Fred B Aubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:31
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N2229/00; F23N2229/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807376A
Cited
US1596836A
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US1862690A
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US2081091A
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US2085195A
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US2098951A
Cited
US2306073A
Cited
US2230732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |