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US2488618A
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Lubricants of the extreme pressure type
Assignee: Standard Oil Development Co
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Filing: 1946-11-25
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Granted: 1949-11-22
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Expires: 1966-11-25
Abstract
No abstract record available.
Inventors
- 👤 Elmer B Cyphers
- 👤 George M Mcnulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:04
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C09; C09F; C09F1/00; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/12; C10M2223/121; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |