Patent US3511639A successfully refreshed from Google Patents.
US3511639A
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US
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Magnetic alloy material
Assignee: AT&T Inc
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Filing: 1967-09-05
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Granted: 1970-05-12
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Expires: 1987-09-05
Abstract
No abstract record available.
Inventors
- 👤 Gilbert Y Chin
- 👤 Donald Jaffe
- 👤 Ethan A Nesbitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:37
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/12; H01F1/14; H01F1/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3067029A
Cited
US3444012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |