US2654483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center core seal for filter elements
Assignee: Fram Corp
•
Filing: 1951-03-29
•
Granted: 1953-10-06
•
Expires: 1971-03-29
Abstract
No abstract record available.
Inventors
- 👤 Ahlijian Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:52
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D27/00; B01D27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189711700A
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US739146A
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US1930209A
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US2148708A
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US2196349A
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US2345848A
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US2367745A
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US2514366A
Cited
US2575995A
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US2487146A
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US2554016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |