US2649082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cooling system utilizing waste heat
Assignee: ENGINEERING CONTROLS Inc
•
Filing: 1950-06-03
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Granted: 1953-08-18
•
Expires: 1970-06-03
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Harbert
- 👤 William G Corey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:40
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F01P3/00; F01P3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190007335A
Cited
GB410199A
Cited
US2147993A
Cited
GB500953A
Cited
GB546784A
Cited
FR888045A
Cited
FR52417E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |