US2156803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: COOPER PRODUCTS Inc
•
Filing: 1934-05-03
•
Granted: 1939-05-02
•
Expires: 1954-05-03
Abstract
No abstract record available.
Inventors
- 👤 Hugh S Cooper
- 👤 Vivian R Damerell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:05
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/06; C10M2201/061; C10M2201/065; C10M2201/066; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/087; C10M2201/16; C10M2201/18; C10M2207/00; C10M2207/40; C10M2207/404; C10N; C10N2040/00; C10N2040/02; C10N2040/46; C10N2050/00; C10N2050/10; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/91
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) | 1942-05-01 | 1942-10-31 | 1943-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-01 | 1946-10-31 | 1947-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-01 | 1950-10-31 | 1951-05-02 | $7700.00 | Window Closed / Lapsed |