US3079468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording and reproducing
Assignee: RCA Corp
•
Filing: 1958-12-24
•
Granted: 1963-02-26
•
Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Robert E Morey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:54
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0007; G11B5/00; G11B5/127; G11B5/17; G11B5/187; G11B5/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A MAGNETIC HEAD COMPRISING A CORE OF MAGNETIC MATERIAL, A SIGNAL COIL MAGNETICALLY COUPLED TO SAID CORE, AND A CURRENT CARRYING ELEMENT ASSOCIATED WITH SAID CORE FOR MAGNETICALLY SATURATING SAID CORE IN THE REGION OF SAID ELEMENT TO THEREBY ESTABLISH A VIRTUAL GAP IN SAID CORE AT SAID REGION.
Claim 2
Dependent Claim
49 words
A MAGNETIC HEAD COMPRISING A CORE OF MAGNETIC MATERIAL, A SIGNAL COIL MAGNETICALLY COUPLED TO SAID CORE, AND A CURRENT CARRYING ELEMENT ASSOCIATED WITH SAID CORE FOR MAGNETICALLY SATURATING SAID CORE IN THE REGION OF SAID ELEMENT TO THEREBY ESTABLISH A VIRTUAL GAP IN SAID CORE AT SAID REGION.
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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 |