Patent NL69193C successfully refreshed from Google Patents.
Patent US3608282A successfully refreshed from Google Patents.
US3608282A
Expired / Lapsed
US
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Filtering systems
Assignee: Applied Automation Inc
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Filing: 1968-12-13
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Granted: 1971-09-28
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Expires: 1988-12-13
Abstract
Abstract AN APPARATUS FOR SEPARATING PARTICULATE MATTER FROM A FLUID STREAM WHICH INVOLVES MEANS FOR PASSING THE FLUID STREAM THROUGH A FILTER, MEANS REVERSING THE FLOW OF THE FLUID TO REMOVE THE MATTER FROM THE FILTER AND PERMITTING THE REMOVED MATTER TO PASS INTO POROUS COLLECTING MEANS.
Inventors
- 👤 Otis E Ririe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:46
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/66; B01D46/70; B01D46/42; B01D46/4272
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |