US3534855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and installation for clarification of water
Assignee: Dite Eaux Et De L'ozone sa Cie
•
Filing: 1968-01-08
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Granted: 1970-10-20
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Expires: 1988-01-08
Abstract
No abstract record available.
Inventors
- 👤 Jean Guillerd
- 👤 Claude Valin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:16
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/12; B01D24/00; B01D24/007; B01D24/008; B01D24/02; B01D24/20; B01D24/26; B01D24/263; B01D24/46; B01D24/4631
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1232805A
Cited
US1838263A
Cited
US2723761A
Cited
US2685565A
Cited
US3276585A
Cited
US3405806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |