US2533192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for filter cartridges
Assignee: Fram Corp
•
Filing: 1948-06-10
•
Granted: 1950-12-05
•
Expires: 1968-06-10
Abstract
No abstract record available.
Inventors
- 👤 Walter V Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:21
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D27/00; B01D27/02; B01D27/08; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/88; B01D29/94; B01D29/96; B01D2201/00; B01D2201/04; B01D2201/0407; B01D2201/28; B01D2201/287; B01D2201/30; B01D2201/301; B01D2201/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US788359A
Cited
US1162455A
Cited
US1985899A
Cited
US2043781A
Cited
US2168125A
Cited
US2232423A
Cited
US2272115A
Cited
US2467911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |