Patent US3404833A successfully refreshed from Google Patents.
US3404833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge
Assignee: BWS Technologie GmbH
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Filing: 1967-08-16
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Granted: 1968-10-08
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Expires: 1987-08-16
Abstract
No abstract record available.
Inventors
- 👤 Pause Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:04
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/14
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) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |