Patent US3582408A successfully refreshed from Google Patents.
US3582408A
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Magnetostrictive element
Assignee: RCA Corp
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Filing: 1968-09-24
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Granted: 1971-06-01
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Expires: 1988-09-24
Abstract
Abstract A MAGNETOSTRICTIVE ELEMENT USEFUL IN SONIC MEMORY DEVICES COMPRISES A THIN FILM OF AN ALLOY COMPRISED OF BETWEEN 40 AND 70 WEIGHT PERCENT NICKEL, BETWEEN 30 AND 60 WEIGHT PERCENT IRON, AND FROM ABOUT 0.1 TO 14 WEIGHT PERCENT MANGANESE.
Inventors
- 👤 Lubomyr S Onyshkevych
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:30
CPC Classifications
H; H01; H01F; H01F10/00; H01F10/08; H01F10/10; H01F10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |