US2511549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for internalcombustion engines
Assignee: Kenworth Motor Truck Corp
•
Filing: 1947-01-11
•
Granted: 1950-06-13
•
Expires: 1967-01-11
Abstract
No abstract record available.
Inventors
- 👤 Hendrick E Simi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
F; F01; F01P; F01P5/00; F01P5/02; F01P5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1575692A
Cited
US1867678A
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US1820091A
Cited
US1974033A
Cited
US2123076A
Cited
US2165795A
Cited
US2232587A
Cited
US2250332A
Cited
US2407223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |