US2964193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge for separating water from fine granular material
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1957-08-02
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Granted: 1960-12-13
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Expires: 1977-08-02
Abstract
No abstract record available.
Inventors
- 👤 Heckmann Wolfgang Gertr Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
B; B04; B04B; B04B3/00; B04B3/06; B04B9/00; B04B9/12
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |