US2690795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil burner and controlling apparatus
Assignee: Individual
•
Filing: 1950-11-24
•
Granted: 1954-10-05
•
Expires: 1970-11-24
Abstract
No abstract record available.
Inventors
- 👤 Webb Howard William Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:28
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/10; F23D11/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1063352A
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US1633502A
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US1679830A
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US1923614A
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US2000733A
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US2253160A
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US2104221A
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US2247768A
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US2397987A
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US2565879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |