US2591248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil filter mounting
Assignee: Individual
•
Filing: 1949-11-30
•
Granted: 1952-04-01
•
Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 Paul L Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:07
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/153; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1791046A
Cited
US1228837A
Cited
US1982376A
Cited
US2203668A
Cited
US2211305A
Cited
US2401674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |