US1674689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for internal-combustion engines and process of operating the same
Assignee: Harrison Radiator Corp
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Filing: 1922-11-20
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Granted: 1928-06-26
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Expires: 1942-11-20
Abstract
No abstract record available.
Inventors
- 👤 Wellington W Muir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:56
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/02; F28; F28F; F28F9/00; F28F9/02; F28F9/0231
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) | 1931-06-26 | 1931-12-26 | 1932-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-06-26 | 1935-12-26 | 1936-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-06-26 | 1939-12-26 | 1940-06-26 | $7700.00 | Window Closed / Lapsed |