US3497452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for clarifying a liquid
Assignee: Individual
•
Filing: 1968-09-09
•
Granted: 1970-02-24
•
Expires: 1988-09-09
Abstract
No abstract record available.
Inventors
- 👤 Kostas Savas Arvanitakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/16; B01D27/00; B01D27/02; B01D29/00; B01D29/39; B01D29/41; B01D29/50; B01D29/56; B01D29/62; B01D29/64; B01D29/6407; B01D29/6415; B01D29/88; B01D29/94; B01D33/00; B01D33/15; B01D33/21; B01D33/35; B01D33/37; B01D33/44; B01D33/46; B01D33/461; B01D33/463; B01D37/00; B01D2201/00; B01D2201/12; B01D2201/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2221210A
Cited
US2300789A
Cited
US2592972A
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US2799397A
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US2788126A
Cited
US3143497A
Cited
US3252577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |