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US2552973A
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Oil burner primary safety control
Assignee: Iron Fireman Manufacturing Co
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Filing: 1949-06-20
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Granted: 1951-05-15
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Expires: 1969-06-20
Abstract
No abstract record available.
Inventors
- 👤 Albert L Judson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:53
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2022188A
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US1910721A
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US2021407A
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US1991185A
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US2117021A
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US2195649A
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US2230732A
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US2486612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |