Patent USRE30446E successfully refreshed from Google Patents.
US2803296A
Expired / Lapsed
US
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Combustion head for burner apparatus
Assignee: Individual
•
Filing: 1952-06-05
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Granted: 1957-08-20
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Expires: 1972-06-05
Abstract
No abstract record available.
Inventors
- 👤 Young Cyril Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:18
CPC Classifications
F; F23; F23D; F23D17/00; F23D17/002; F23D11/00; F23D11/36; F23D11/40; F23D11/408
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |