US3368684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously operating centrifuging device
Assignee: Sulzer Escher Wyss AG
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Filing: 1967-08-07
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Granted: 1968-02-13
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Expires: 1987-08-07
Abstract
No abstract record available.
Inventors
- 👤 Ruegg Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:05
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/20; B04B3/00; B04B3/02; C; C09; C09B; C09B67/00; C09B67/006; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G03; G03H; G03H3/00
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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |