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US3376157A
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Method of preparing transparent ferromagnetic single crystals
Assignee: International Business Machines Corp
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Filing: 1963-11-01
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Granted: 1968-04-02
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Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Carl F Guerci
- 👤 Merrill W Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:47
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/0009; G02F1/0036; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/0302; H01F1/0311; H01F1/0313; H01F41/00; H01F41/14; H01F41/20
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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |