US3058591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet type apparatus for classifying, dewatering and recovering slack or other fine ore
Assignee: Individual
•
Filing: 1959-06-01
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Granted: 1962-10-16
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Expires: 1979-06-01
Abstract
No abstract record available.
Inventors
- 👤 Nakahara Chuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:42
CPC Classifications
B; B07; B07B; B07B1/00; B01; B01D; B01D35/00; B01D35/20; B01D35/28; B07B2230/00; B07B2230/01
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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |