Patent US2178534A successfully refreshed from Google Patents.
US2178534A
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Lubricating oil
Assignee: Lubrizol Development Corp
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Filing: 1936-02-15
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Granted: 1939-10-31
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Expires: 1956-02-15
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Waldo L Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:29
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/043; C10M2205/00; C10M2205/22; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/024; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; C10M2211/08; C10M2219/00; C10M2219/04; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/086; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2221/00; C10M2221/04; C10M2221/043
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) | 1942-10-30 | 1943-05-01 | 1943-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-30 | 1947-05-01 | 1947-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-30 | 1951-05-01 | 1951-10-31 | $7700.00 | Window Closed / Lapsed |