US3546110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating sewage water by means of flocculation and aeration
Assignee: Xylem Water Solutions AB
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Filing: 1968-05-31
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Granted: 1970-12-08
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Expires: 1988-05-31
Abstract
No abstract record available.
Inventors
- 👤 Sixten Englesson
- 👤 Sven Gustaf Yngve Gamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:03
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1215; C02F1/00; C02F1/52; C02F1/5236; C02F3/1236; C02F3/1242; C02F3/1247; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/208; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |