Patent US2085810A successfully refreshed from Google Patents.
US2085810A
Expired / Lapsed
US
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Cooling of internal combustion engines
Assignee: SPONTAN AB
•
Filing: 1933-03-17
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Granted: 1937-07-06
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Expires: 1953-03-17
Abstract
No abstract record available.
Inventors
- 👤 Ljungstrom Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:00
CPC Classifications
F; F01; F01P; F01P9/00; F01M; F01M5/00; F01M5/002; F01P11/00; F01P11/08; F01P5/00; F01P5/02; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/14; F02F1/16; F02F1/163; F02F1/24; F02F1/26; F02F1/36; F02F1/365; F01P3/00; F01P2003/001; F01P2003/003; F01P2003/006
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) | 1940-07-05 | 1941-01-04 | 1941-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-05 | 1945-01-04 | 1945-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-05 | 1949-01-04 | 1949-07-06 | $7700.00 | Window Closed / Lapsed |