Patent US2765842A successfully refreshed from Google Patents.
US2765842A
Expired / Lapsed
US
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Hydrocarbon burner head
Assignee: Preferred Utilities Manufacturing Corp
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Filing: 1952-03-05
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Granted: 1956-10-09
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Expires: 1972-03-05
Abstract
No abstract record available.
Inventors
- 👤 Harry E Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:31
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/40; F23D11/408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1781236A
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US1953483A
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US2156121A
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US2502664A
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US2516063A
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US2560074A
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US2527503A
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US2665748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |