Patent US2333871A successfully refreshed from Google Patents.
US2333871A
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US
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Lubricating oil
Assignee: ConocoPhillips Co
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Filing: 1941-04-10
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Granted: 1943-11-09
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Expires: 1961-04-10
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Gordon D Byrkit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:58
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/04; C10M2207/044; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2227/00; C10M2227/08; C10N; C10N2010/00; C10N2010/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-11-08 | 1947-05-10 | 1947-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-08 | 1951-05-10 | 1951-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-08 | 1955-05-10 | 1955-11-09 | $7700.00 | Window Closed / Lapsed |