US2680490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for rear-end power plants
Assignee: Kenworth Motor Truck Corp
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Filing: 1950-10-03
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Granted: 1954-06-08
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Expires: 1970-10-03
Abstract
No abstract record available.
Inventors
- 👤 Leslie R Dafoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:44
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00357; B60H1/00371; F; F01; F01P; F01P11/00; F01P11/12; B60H1/00007; B60H1/00207; B60H2001/00242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |