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US2691972A
Expired / Lapsed
US
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Liquid cooler for internalcombustion engines
Assignee: Daimler Benz AG
•
Filing: 1949-09-16
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Granted: 1954-10-19
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Expires: 1969-09-16
Abstract
No abstract record available.
Inventors
- 👤 Stump Eugen
- 👤 Heim Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:57
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1891006A
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US1846268A
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US2134161A
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US2012613A
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US1929191A
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US1907033A
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US2054238A
Cited
US2120085A
Cited
US2436729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |