US2864499A
Expired / Lapsed
US
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Heavy media centrifugal separating apparatus and method
Assignee: Skb Schuechtermann & Kremer Ba
•
Filing: 1952-09-09
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Granted: 1958-12-16
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Expires: 1972-09-09
Abstract
No abstract record available.
Inventors
- 👤 Teuteberg Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:48
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US927059A
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US978238A
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US1158959A
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US1356665A
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US1373219A
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US1640707A
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US1825157A
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US2109234A
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US2263095A
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US2495950A
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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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |