US2484385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid fuel burning internalcombustion air heater
Assignee: Stewart Warner Corp
•
Filing: 1945-10-03
•
Granted: 1949-10-11
•
Expires: 1965-10-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:38
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D13/08; Y; Y02; Y02T; Y02T50/00; Y02T50/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US400886A
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US2309319A
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US840657A
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US865746A
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US1382721A
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US1350917A
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US1798290A
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US2158338A
Cited
US2267531A
Cited
US2221842A
Cited
US2290334A
Cited
US2401393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |