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US2491683A
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Lubricant composition
Assignee: Standard Oil Development Co
•
Filing: 1946-08-22
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Granted: 1949-12-20
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Expires: 1966-08-22
Abstract
No abstract record available.
Inventors
- 👤 John C Munday
- 👤 Dilworth T Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:42
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2215/00; C10M2215/02; C10M2215/06; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1815022A
Cited
US2375516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |