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US2552302A
Expired / Lapsed
US
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Control system for combined oil and gas burners
Assignee: Individual
•
Filing: 1947-07-30
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Granted: 1951-05-08
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Expires: 1967-07-30
Abstract
No abstract record available.
Inventors
- 👤 Young Cyril Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:53
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/005; F23N2237/00; F23N2237/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1984572A
Cited
US1868051A
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US1786901A
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US1840744A
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US1860311A
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US1885478A
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US2168680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |