US2559133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repackable oil filtering cartridge
Assignee: Individual
•
Filing: 1949-01-10
•
Granted: 1951-07-03
•
Expires: 1969-01-10
Abstract
No abstract record available.
Inventors
- 👤 Charles C Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:15
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02; B01D27/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1930209A
Cited
US2275481A
Cited
US2247445A
Cited
US2280033A
Cited
US2294262A
Cited
US2342948A
Cited
US2364240A
Cited
US2463929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |