US3376566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extended bandwidth magnetic recording system with increased storage density
Assignee: Unisys Corp
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Filing: 1965-07-15
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Granted: 1968-04-02
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Expires: 1985-07-15
Abstract
No abstract record available.
Inventors
- 👤 Edmund G Coccagna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:35
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN IMPROVED MAGNETIC RECORDING-REPRODUCING SYSTEM WHOSE SHORTEST WAVELENGTH OF REPRODUCIBLE MAGNETIZATION IS NOT LIMITED BY THE GAP LENGTH OF ITS MAGNETIC HEAD COMPRISING IN COMBINATION, A MAGNETIC RECORDINGREPRODUCING SYSTEM INCLUDING A MAGNETIC HEAD WITH A SIGNAL COIL WOUND THEREON, A COMPARATOR CIRCUIT HAVING A FIRST AND A SECOND INPUT MEANS AND OUTPUT MEANS, SAID FIRST INPUT MEANS CONNECTED TO THE HEAD COIL AND A DELAY DEVICE CONNECTED FROM THE OUTPUT MEANS TO THE SECOND
Claim 2
Dependent Claim
74 words
AN IMPROVED MAGNETIC RECORDING-REPRODUCING SYSTEM WHOSE SHORTEST WAVELENGTH OF REPRODUCIBLE MAGNETIZATION IS NOT LIMITED BY THE GAP LENGTH OF ITS MAGNETIC HEAD COMPRISING IN COMBINATION, A MAGNETIC RECORDINGREPRODUCING SYSTEM INCLUDING A MAGNETIC HEAD WITH A SIGNAL COIL WOUND THEREON, A COMPARATOR CIRCUIT HAVING A FIRST AND A SECOND INPUT MEANS AND OUTPUT MEANS, SAID FIRST INPUT MEANS CONNECTED TO THE HEAD COIL AND A DELAY DEVICE CONNECTED FROM THE OUTPUT MEANS TO THE SECOND
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 |