US2401646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control for cooling fluid of internal-combustion engines
Assignee: Individual
•
Filing: 1945-02-28
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Granted: 1946-06-04
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Expires: 1965-02-28
Abstract
No abstract record available.
Inventors
- 👤 Johnson John Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:33
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/14; F01P7/16; G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-06-03 | 1949-12-03 | 1950-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-06-03 | 1953-12-03 | 1954-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-06-03 | 1957-12-03 | 1958-06-04 | $7700.00 | Window Closed / Lapsed |