Patent US3335250A successfully refreshed from Google Patents.
US3335250A
Expired / Lapsed
US
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Arrangement for electromagnetic stirring of melted metals
Assignee: National University of Science and Technology MISIS
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Filing: 1964-12-29
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Granted: 1967-08-08
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Expires: 1984-12-29
Abstract
No abstract record available.
Inventors
- 👤 Purchinsky Miro Stanislavovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:01
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/34; H05B2213/00; H05B2213/02
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |