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US2568196A
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Assignee: Fram Corp
•
Filing: 1947-02-08
•
Granted: 1951-09-18
•
Expires: 1967-02-08
Abstract
No abstract record available.
Inventors
- 👤 Walter V Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:19
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02; B01D27/08; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913401A
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US1444135A
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US1581947A
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US2070039A
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US2008807A
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US2179784A
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US2203668A
Cited
US2253684A
Cited
US2381141A
Cited
US2427320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |