Patent US3029863A successfully refreshed from Google Patents.
US3029863A
Expired / Lapsed
US
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Liquid fuel burning heater
Assignee: Individual
•
Filing: 1960-06-22
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Granted: 1962-04-17
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Expires: 1980-06-22
Abstract
No abstract record available.
Inventors
- 👤 Edgar S Downs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:35
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/18; F24H9/1854; F24H9/1877; F24H9/1881; F23; F23D; F23D11/00; F23D11/04; F23D11/06; F24H3/00; F24H3/02; F24H3/04; F24H3/0488; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US980801A
Cited
US1419380A
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US1497829A
Cited
US2025526A
Cited
US2039937A
Cited
US2112888A
Cited
DE691430C
Cited
US2630166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |