Patent US676139A successfully refreshed from Google Patents.
Patent US2572250A successfully refreshed from Google Patents.
US2572250A
Expired / Lapsed
US
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Oil pump assembly
Assignee: Case LLC
•
Filing: 1945-04-06
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Granted: 1951-10-23
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Expires: 1965-04-06
Abstract
No abstract record available.
Inventors
- 👤 Fred H Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:59
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/02; F16; F16N; F16N13/00; F16N13/20; F01M2001/0284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1634123A
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US1658979A
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US2355217A
Cited
GB548176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |