Patent US2318276A successfully refreshed from Google Patents.
US2318276A
Expired / Lapsed
US
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Engine lubricating system
Assignee: John Deere Tractor Co
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Filing: 1939-11-10
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Granted: 1943-05-04
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Expires: 1959-11-10
Abstract
No abstract record available.
Inventors
- 👤 Wayne H Worthington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:48
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/10; F01M1/02; F01M1/12; F01M11/00; F01M11/03; F01M2001/1007; F01M2001/1014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-05-03 | 1946-11-02 | 1947-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-03 | 1950-11-02 | 1951-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-03 | 1954-11-02 | 1955-05-04 | $7700.00 | Window Closed / Lapsed |