US1970902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: Standard Oil Co
•
Filing: 1931-12-31
•
Granted: 1934-08-21
•
Expires: 1951-12-31
Abstract
No abstract record available.
Inventors
- 👤 Lawrence C Brunstrum
- 👤 Daniel G Loetscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:57
CPC Classifications
C; C10; C10M; C10M7/00; C10M2201/00; C10M2201/02; C10M2201/10; C10M2201/102; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2209/00; C10M2209/12; C10N; C10N2050/00; C10N2050/08; 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) | 1937-08-20 | 1938-02-19 | 1938-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-08-20 | 1942-02-19 | 1942-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-08-20 | 1946-02-19 | 1946-08-21 | $7700.00 | Window Closed / Lapsed |