Patent US2457862A successfully refreshed from Google Patents.
US2457862A
Expired / Lapsed
US
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Combustion heater with thermally controlled fuel supply
Assignee: Excel Auto Radiator Co
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Filing: 1942-12-21
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Granted: 1949-01-04
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Expires: 1962-12-21
Abstract
No abstract record available.
Inventors
- 👤 Theodore S Briskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:23
CPC Classifications
F; F24; F24H; F24H1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1673900A
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US2247405A
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US1846978A
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US1779572A
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US2254801A
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US2200232A
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US2192688A
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US2157643A
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US2270824A
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US2270955A
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US2332094A
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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) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |