US2456951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for internalcombustion engines
Assignee: CROSLEY MOTORS Inc
•
Filing: 1946-05-01
•
Granted: 1948-12-21
•
Expires: 1966-05-01
Abstract
No abstract record available.
Inventors
- 👤 Klotsch Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:34
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0021; F02F7/0034; F02F1/00; F02F1/02; F02F1/10; F02F1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1113124A
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US1659676A
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US2337577A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |