US2554016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil filter
Assignee: EDDINGTON METAL SPECIALTY Co
•
Filing: 1948-04-07
•
Granted: 1951-05-22
•
Expires: 1968-04-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter V Czarnecki
- 👤 Casimer M Czarnecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:56
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/02; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/50; B01D29/52; B01D29/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB189702931A
Cited
US1017867A
Cited
US1580470A
Cited
US1579205A
Cited
US1647799A
Cited
US1702489A
Cited
FR35110E
Cited
FR802427A
Cited
US2208033A
Cited
US2339703A
Cited
FR882093A
Cited
US2367873A
Cited
US2389431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |