Patent US3486548A successfully refreshed from Google Patents.
US3486548A
Expired / Lapsed
US
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Method and apparatus for concentrating liquid-solids mixtures
Assignee: Safeway Inc
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Filing: 1967-07-31
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Granted: 1969-12-30
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Expires: 1987-07-31
Abstract
No abstract record available.
Inventors
- 👤 Philip E Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:45
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US288503A
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US389048A
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US880917A
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US1154190A
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US1191921A
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US1361238A
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US2081512A
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US2452983A
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US2636555A
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US2846319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |