Patent US2647567A successfully refreshed from Google Patents.
US2647567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner
Assignee: Individual
•
Filing: 1951-07-30
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Granted: 1953-08-04
•
Expires: 1971-07-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Ciglia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:39
CPC Classifications
F; F23; F23D; F23D5/00; F23D5/02; F23D5/04; F23D5/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2309319A
Cited
US548647A
Cited
US404428A
Cited
US1646043A
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US1453495A
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US1677447A
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US1670274A
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US1658462A
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US1835297A
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US1725218A
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US1903364A
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US1896247A
Cited
US2119922A
Cited
US2344439A
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US2456170A
Cited
US2416932A
Cited
US2408865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |