Patent US2902163A successfully refreshed from Google Patents.
US2902163A
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Filter structure
Assignee: Dana Inc
•
Filing: 1955-01-11
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Granted: 1959-09-01
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Expires: 1975-01-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Kingsley E Humbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:39
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/88; B01D29/90; B01D29/902; B01D29/92; B01D29/925; B01D35/14; B01D35/157; B01D2201/00; B01D2201/30; B01D2201/301
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913401A
Cited
US2218800A
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US2533266A
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US2606628A
Cited
US2685371A
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US2605904A
Cited
US2661846A
Cited
US2680521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |