Patent US2167867A successfully refreshed from Google Patents.
US2167867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: EIDP Inc
•
Filing: 1936-05-07
•
Granted: 1939-08-01
•
Expires: 1956-05-07
Abstract
No abstract record available.
Inventors
- 👤 Benning Anthony Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
C; C10; C10M; C10M173/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043; C10M2223/047; C10M2223/10; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-07-31 | 1943-01-30 | 1943-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-31 | 1947-01-30 | 1947-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-31 | 1951-01-30 | 1951-08-01 | $7700.00 | Window Closed / Lapsed |