Patent EP0494608A2 successfully refreshed from Google Patents.
Patent US1747867A successfully refreshed from Google Patents.
US2863499A
Expired / Lapsed
US
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Fuel burners
Assignee: Individual
•
Filing: 1955-12-01
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Granted: 1958-12-09
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Expires: 1975-12-01
Abstract
No abstract record available.
Inventors
- 👤 George W Jackson
- 👤 William G Daugherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:24
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/10; F23D11/18; F23D11/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US474344A
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US1403954A
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US719801A
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US726059A
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US999165A
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US1434324A
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US1457000A
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US1448802A
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US1611067A
Cited
US1554141A
Cited
US1685967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |