US2606660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating solids of relatively different wettabilities
Assignee: Combined Metals Reduction Co
•
Filing: 1946-09-04
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Granted: 1952-08-12
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Expires: 1966-09-04
Abstract
No abstract record available.
Inventors
- 👤 Klepetko Ernest
- 👤 Jr Lester J Hartzell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:08
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B03D1/1412; B03D1/1443; B03D1/1456; B03D1/1468; B03D1/1475; B03D1/1493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US689193A
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US675833A
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US2051676A
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GB480906A
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US2226170A
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US2378152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |