Patent US2780280A successfully refreshed from Google Patents.
US2780280A
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US
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Combustion heater of the fuel vapor generator type
Assignee: Stewart Warner Corp
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Filing: 1952-08-14
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Granted: 1957-02-05
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Expires: 1972-08-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:22
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/065; F23; F23C; F23C99/00; F23C2700/00; F23C2700/02; F23C2700/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US701026A
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US1655232A
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US1605423A
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US2159257A
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US2038264A
Cited
CH190639A
Cited
US2193659A
Cited
US2376383A
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US2362259A
Cited
US2594206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |