US2956679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal apparatus for separating solids
Assignee: Individual
•
Filing: 1955-11-15
•
Granted: 1960-10-18
•
Expires: 1975-11-15
Abstract
No abstract record available.
Inventors
- 👤 Hoffmann Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:45
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/24; B04C5/28; D; D21; D21D; D21D5/00; D21D5/02; D21D5/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |