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Patent US2742158A successfully refreshed from Google Patents.
US2742158A
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Pressure filter with vibrating device for use in back washing operation
Assignee: Individual
•
Filing: 1952-08-29
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Granted: 1956-04-17
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Expires: 1972-08-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Schuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:09
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/62; B01D29/66; B01D29/70; B01D29/72; B01D29/88; B01D29/90; B01D29/902; B01D29/92; B01D29/925; B01D29/96; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2180189A
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US2068099A
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US2498292A
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US2568085A
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US2578636A
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US2601156A
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US2600458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |