US2910179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure and means for the separation of solid materials of different specific gravities according to the sink-and-float method
Assignee: Individual
•
Filing: 1955-06-03
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Granted: 1959-10-27
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Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
- 👤 Svensson Karl Jonas Valter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:36
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/44; B03B5/442; B03B5/445
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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |