Patent US2465579A successfully refreshed from Google Patents.
US2465579A
Expired / Lapsed
US
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Mechanically cleanable filter
Assignee: Individual
•
Filing: 1944-11-27
•
Granted: 1949-03-29
•
Expires: 1964-11-27
Abstract
No abstract record available.
Inventors
- 👤 Albert J Eduards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:00
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/46; B01D25/00; B01D25/32; B01D25/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US404911A
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US559440A
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US1150910A
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US1581998A
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US1926557A
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US2035758A
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FR828262A
Cited
US2197971A
Cited
US2308865A
Cited
US2365525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |