Patent US3425966A successfully refreshed from Google Patents.
Patent US2487215A successfully refreshed from Google Patents.
US2487215A
Expired / Lapsed
US
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Oil cooling system
Assignee: Individual
•
Filing: 1944-06-08
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Granted: 1949-11-08
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Expires: 1964-06-08
Abstract
No abstract record available.
Inventors
- 👤 Blatt Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:44
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/08; F01M; F01M11/00; F01M11/0004; F01M2011/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1290638A
Cited
US1550947A
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US1651156A
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US1747772A
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US1761942A
Cited
US1896355A
Cited
US2041928A
Cited
US2008164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |