Patent US2928547A successfully refreshed from Google Patents.
US2928547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter
Assignee: LEE JEWELL
•
Filing: 1956-12-28
•
Granted: 1960-03-15
•
Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harry J Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:25
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/07; B01D29/073; B01D29/88; B01D29/90; B01D29/902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1302731A
Cited
US1753809A
Cited
US2547857A
Cited
US2597217A
Cited
US2661846A
Cited
US2750048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |