US2225815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lubricating bearings operating at high temperatures
Assignee: Acheson Colloids Corp
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Filing: 1938-09-02
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Granted: 1940-12-24
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Expires: 1958-09-02
Abstract
No abstract record available.
Inventors
- 👤 Howard A Acheson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:44
CPC Classifications
C; C10; C10M; C10M7/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/10; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/02; C10N2040/12; C10N2040/13; C10N2040/135; C10N2050/00; C10N2050/015; C10N2050/02; 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) | 1943-12-24 | 1944-06-24 | 1944-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-24 | 1948-06-24 | 1948-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-24 | 1952-06-24 | 1952-12-24 | $7700.00 | Window Closed / Lapsed |