Patent US2437681A successfully refreshed from Google Patents.
US2437681A
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Submerged-belt type magnetic separator
Assignee: Individual
•
Filing: 1943-05-27
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Granted: 1948-03-16
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Expires: 1963-05-27
Abstract
No abstract record available.
Inventors
- 👤 Robert E Crockett
- 👤 Page S Haselton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:39
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/16; B03C1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2090112A
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US2160628A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |