Patent US2494714A successfully refreshed from Google Patents.
US2494714A
Expired / Lapsed
US
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Oil burner apparatus, including an automatic delay action fuel valve
Assignee: Westinghouse Electric Corp
•
Filing: 1943-03-27
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Granted: 1950-01-17
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Expires: 1963-03-27
Abstract
No abstract record available.
Inventors
- 👤 Wallace R Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:40
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/24; F23D11/26; F23D11/28; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |