US3444077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid clarifying method
Assignee: HARVEY E FINCH
•
Filing: 1965-01-21
•
Granted: 1969-05-13
•
Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Harvey E Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:55
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/0217; B01D17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR431552A
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US2017111A
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US2108168A
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US2021672A
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US2798041A
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GB790474A
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US2806599A
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FR1230421A
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US2965522A
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US3215623A
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US3298521A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |