US3079470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducer head
Assignee: IIT Research Institute
•
Filing: 1959-12-21
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Granted: 1963-02-26
•
Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Camras Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:29
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/133; G11B5/187; G11B5/193; G11B5/23; G11B5/235
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
23 words
A MAGNETIC HEAD COMPRISING A PAIR OF SINGLE CYRSTAL FERRITE MEMBERS HAVING A RESPECTIVE SURFACES IN CONFRONTING RELATION TO DEFINE A NON-MAGNETIC GAP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |