US2352669A
Expired / Lapsed
US
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Lubricating oil composition
Assignee: Shell Development Co
•
Filing: 1941-12-26
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Granted: 1944-07-04
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Expires: 1961-12-26
Abstract
No abstract record available.
Inventors
- 👤 Paul R Van Ess
- 👤 Ellis R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/08; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L10/00; C10L10/06; C10L10/08; C10M129/00; C10M129/02; C10M129/04; C10M129/10; C10M133/00; C10M133/02; C10M133/04; C10M133/12; C10M133/16; C10M133/18; C10M133/20; C10M135/00; C10M135/08; C10M135/10; C10M135/12; C10M135/14; C10M135/16; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/026; C10M2207/027; C10M2207/04; C10M2207/046; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/067; C10M2215/068; C10M2215/10; C10M2215/102; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/08; C10M2219/082; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16
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) | 1947-07-04 | 1948-01-03 | 1948-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-04 | 1952-01-03 | 1952-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-04 | 1956-01-03 | 1956-07-04 | $7700.00 | Window Closed / Lapsed |