US2531027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner
Assignee: MONARCH MANUFACTURING WORKS Inc
•
Filing: 1947-12-17
•
Granted: 1950-11-21
•
Expires: 1967-12-17
Abstract
No abstract record available.
Inventors
- 👤 James M Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:41
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/001; F23D1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1953483A
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US1990088A
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US2120387A
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US2066806A
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US2156121A
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US2163915A
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US2181527A
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US2262525A
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US2308439A
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US2473347A
Cited
US2458372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |