US2837075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine crankcase structure
Assignee: Motors Liquidation Co
•
Filing: 1954-07-12
•
Granted: 1958-06-03
•
Expires: 1974-07-12
Abstract
No abstract record available.
Inventors
- 👤 Clayton B Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:23
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0065; F01; F01M; F01M11/00; F01M11/0004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1422622A
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US1660599A
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US975167A
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US1623462A
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US1647434A
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US1631208A
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US1743586A
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US1711297A
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US2039002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |