US2758715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet separator
Assignee: Barnes Drill Co
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Filing: 1953-08-20
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Granted: 1956-08-14
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Expires: 1973-08-20
Abstract
No abstract record available.
Inventors
- 👤 Leslie L Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:10
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/10; B03C1/12; B03C2201/00; B03C2201/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
A MAGNETIC SEPARATOR HAVING, IN COMBINATION, A ROTARY CYLINDRICAL DRUM HAVING OPPOSITELY POLARIZED PERIPHERAL AREAS SPACED AXIALLY AND CIRCUMFERENTIALLY AROUND ITS PERIPHERY, A TANK ENCLOSING THE LOWER PORTION OF SAID DRUM AND HAVING A BOTTOM COOPERATING WITH SAID PERIPHERY TO DEFINE A PASSAGE THROUGH WHICH LIQUID TO BE CLEANED MAY
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) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |