US2624422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating system for internalcombustion engines and filter structure for use therein
Assignee: FILTORS Inc
•
Filing: 1952-10-24
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Granted: 1953-01-06
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Expires: 1972-10-24
Abstract
No abstract record available.
Inventors
- 👤 Molyneux Cecil Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:18
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/10; B; B01; B01D; B01D35/00; B01D35/005
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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |