US2305401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure lubricant
Assignee: Standard Oil Development Co
•
Filing: 1940-09-14
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Granted: 1942-12-15
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Expires: 1960-09-14
Abstract
No abstract record available.
Inventors
- 👤 Bradshaw F Armendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:02
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/04; C07; C07G; C07G99/00; C07G99/002; C10M2207/00; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/02; C10N; C10N2040/00; C10N2040/46; C10N2050/00; C10N2050/10
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) | 1945-12-14 | 1946-06-15 | 1946-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-12-14 | 1950-06-15 | 1950-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-12-14 | 1954-06-15 | 1954-12-15 | $7700.00 | Window Closed / Lapsed |