US2272923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: Lubrizol Development Corp
•
Filing: 1938-12-12
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Granted: 1942-02-10
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Expires: 1958-12-12
Abstract
No abstract record available.
Inventors
- 👤 Carl F Prutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:59
CPC Classifications
C; C10; C10M; C10M131/00; C10M131/08; C10M131/12; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/124; C10M2207/125; C10M2207/128; C10M2207/129; C10M2207/16; C10M2207/28; C10M2207/283; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/14; C10M2215/16; C10M2215/18; C10M2215/182; C10M2215/20; C10M2215/202; C10M2215/204; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10M2219/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/047; C10M2227/00; C10M2227/06; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/10; 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) | 1945-02-09 | 1945-08-11 | 1946-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-09 | 1949-08-11 | 1950-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-09 | 1953-08-11 | 1954-02-10 | $7700.00 | Window Closed / Lapsed |