US2799448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal oil cleaners
Assignee: Federal Mogul Engineering Ltd
•
Filing: 1953-01-09
•
Granted: 1957-07-16
•
Expires: 1973-01-09
Abstract
No abstract record available.
Inventors
- 👤 George H Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:05
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/06; F01; F01M; F01M1/00; F01M1/10; F01M2001/1028; F01M2001/1035; Y; Y10; Y10S; Y10S494/00; Y10S494/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1714658A
Cited
US2650022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |