US2556493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner nozzle
Assignee: Individual
•
Filing: 1947-11-10
•
Granted: 1951-06-12
•
Expires: 1967-11-10
Abstract
No abstract record available.
Inventors
- 👤 Otis E Fairfield
- 👤 Alphonse J Durso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:38
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1250600A
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US1395442A
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US1453161A
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DE507757C
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US1706070A
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US1837339A
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GB320567A
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US2062362A
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US2017467A
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US2044696A
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US2126440A
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US2239068A
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US2351965A
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US2407915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |