Patent US2574818A successfully refreshed from Google Patents.
US2574818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil chiller
Assignee: Individual
•
Filing: 1947-08-29
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Granted: 1951-11-13
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Expires: 1967-08-29
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Edmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:42
CPC Classifications
F; F28; F28F; F28F19/00; F28F19/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2032201A
Cited
US2137373A
Cited
US2181602A
Cited
US2182556A
Cited
US2189235A
Cited
US2405944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |