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US2459718A
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Lubricating composition
Assignee: Shell Development Co
•
Filing: 1946-01-25
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Granted: 1949-01-18
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Expires: 1966-01-25
Abstract
No abstract record available.
Inventors
- 👤 Emmett R Barnum
- 👤 George L Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:36
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2219/00; C10M2219/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1974299A
Cited
US2048479A
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US2062652A
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US2204538A
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US2179063A
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US2333093A
Cited
US2402644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |