Patent US4563277B1 successfully refreshed from Google Patents.
US4563277B1
Expired / Lapsed
US
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Apparatus for aerating and mixing waste water
Assignee: Environmental Dynamics Inc
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Filing: 1984-11-27
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Granted: 1996-08-27
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Expires: 2004-11-27
Abstract
No abstract record available.
Inventors
- 👤 Charles E Tharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:10
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C02F3/201; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01F23/2311; B01F23/23115; B01F23/231152; B01F23/23116; B01F23/2312; B01F23/23123; B01F23/23124; B01F23/237; B01F23/2373; B01F23/23113; B01F23/23126; B01F23/231261; Y; Y02; Y02W; Y02W10/00; Y02W10/10
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) | 1999-08-27 | 2000-02-26 | 2000-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-27 | 2004-02-26 | 2004-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-27 | 2008-02-26 | 2008-08-27 | $7700.00 | Window Closed / Lapsed |