Patent US4061533A successfully refreshed from Google Patents.
US3417871A
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Centrifugal concentrator
Assignee: Ajem Laboratories Inc
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Filing: 1967-10-10
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Granted: 1968-12-24
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Expires: 1987-10-10
Abstract
No abstract record available.
Inventors
- 👤 Orlan M Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:08
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/22; B04C5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2709397A
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US2781910A
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US2848066A
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US2953248A
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US3000036A
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US3016962A
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FR1299115A
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US3276592A
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US3243043A
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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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |