US2983335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine lubricating system
Assignee: Motors Liquidation Co
•
Filing: 1958-12-01
•
Granted: 1961-05-09
•
Expires: 1978-12-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene B Etchells
- 👤 Adelbert E Kolbe
- 👤 Harry F Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:08
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/06; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806537A
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US981251A
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US1631537A
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US1428177A
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US1823714A
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US1899949A
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US2010696A
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US2568729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |