Patent US2697910A successfully refreshed from Google Patents.
US2697910A
Expired / Lapsed
US
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Fluid fuel burner with self-contained fuel vaporizing unit
Assignee: Thermal Research and Engineering Corp
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Filing: 1950-07-29
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Granted: 1954-12-28
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Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Brzozowski Witold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:01
CPC Classifications
F; F02; F02K; F02K3/00; F02K3/08; F02K3/10; F23; F23R; F23R3/00; F23R3/28; F23R3/30
Claims Analysis
Total Claims: 0
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US2520388A
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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) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |