US3456798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for clarifying liquids
Assignee: HOWARD D URDANOFF
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Filing: 1968-07-16
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Granted: 1969-07-22
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Expires: 1988-07-16
Abstract
No abstract record available.
Inventors
- 👤 Howard D Urdanoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:52
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0012; B01D21/0087; B01D21/009; B01D21/10; B01D21/12; B01D21/24; B01D21/2427; B01D21/2488; B01D21/26; B01D21/267; B01D21/30; B01D21/34
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |