US3303292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head assembly
Assignee: Ampex Corp
•
Filing: 1963-02-25
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Granted: 1967-02-07
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin A Bedell
- 👤 Burnet M Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/52; G11B5/53; G11B5/127; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49055; Y10T29/49067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A MAGNETIC HEAD ASSEMBLY COMPRISING: A METALLIC MAGNETIC CORE; A NONMETALLIC MAGNETIC BODY JOINED TO AND AGAINST ONE SAID OF SAID CORE, SAID JOINED BODY AND CORE HAVING AN APERTURE FORMED THROUGH BOTH THE BODY AND CORE; AND COIL MEANS DISPOSED THROUGH SAID APERTURE FOR COUPLING AN ELECTRICAL SIGNAL TO SAID CORE AND SAID BODY.
Claim 2
Dependent Claim
55 words
A MAGNETIC HEAD ASSEMBLY COMPRISING: A METALLIC MAGNETIC CORE; A NONMETALLIC MAGNETIC BODY JOINED TO AND AGAINST ONE SAID OF SAID CORE, SAID JOINED BODY AND CORE HAVING AN APERTURE FORMED THROUGH BOTH THE BODY AND CORE; AND COIL MEANS DISPOSED THROUGH SAID APERTURE FOR COUPLING AN ELECTRICAL SIGNAL TO SAID CORE AND SAID BODY.
References Cited (Backward Citations)
US2711945A
Cited
US3171903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |