US2223766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil
Assignee: Lubrizol Development Corp
•
Filing: 1940-02-02
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Granted: 1940-12-03
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Expires: 1960-02-02
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Waldo L Steiner
- 👤 Gordon D Byrkit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:38
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/22; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; 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) | 1943-12-03 | 1944-06-03 | 1944-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-03 | 1948-06-03 | 1948-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-03 | 1952-06-03 | 1952-12-03 | $7700.00 | Window Closed / Lapsed |