Patent US1944941A successfully refreshed from Google Patents.
US1944941A
Expired / Lapsed
US
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Lubricating oil
Assignee: ConocoPhillips Co
•
Filing: 1932-06-11
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Granted: 1934-01-30
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Expires: 1952-06-11
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Henriksen Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
C; C10; C10M; C10M131/00; C10M131/08; C10M131/12; C10M129/00; C10M129/02; C10M129/68; C10M129/70; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2211/00; C10M2211/04; C10M2211/044
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) | 1937-01-29 | 1937-07-31 | 1938-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-29 | 1941-07-31 | 1942-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-29 | 1945-07-31 | 1946-01-30 | $7700.00 | Window Closed / Lapsed |