US2463929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter and renewable cartridge
Assignee: Individual
•
Filing: 1945-11-08
•
Granted: 1949-03-08
•
Expires: 1965-11-08
Abstract
No abstract record available.
Inventors
- 👤 West Herman Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:09
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02; B01D27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2083546A
Cited
US2128589A
Cited
US2197471A
Cited
US2221465A
Cited
US2321985A
Cited
US2280033A
Cited
US2369857A
Cited
US2364617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |