US3239824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for magnetic recording and reproducing
Assignee: Unisys Corp
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Filing: 1962-01-29
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Granted: 1966-03-08
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 George H Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:20
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02; G11B23/00; G11B23/0007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A METHOD OF RECORDING AND RELIABLY REPRODUCING FROM STORAGE INFORMATION MAGNETICALLY STORED ON RECORD CARDS HAVING A MAGNETIC SURFACE ON BOTH SIDES OF THE CARDS AND WHICH CARDS ARE STORED IN INTIMATE CONTACT WITH ONE ANOTHER WHEREBY THE MAGNETIC INFORMATION ON ONE RECORD CARD IS TRANSFERRED THROUGH CONTACT TO THE ADJACENT MAGNETIC SURFACE OF A CARD STORED IN INTIMATE CONTACT THEREWITH, SAID METHOD INCLUDING MAGNETICALLY RECORDING INFORMATION IN A PLURALITY OF TRACKS IN AT LEAST A SINGLE CHANNEL ON AT LEAST A PAIR OF RECORD CARDS WITH THE INFORMATION BEING RECORDED AT A PRESELECTED ANGLE A INCLINED WITH RESPECT TO THE NORMAL TO THE LINE THROUGH THE RECORDING CHANNEL AXIS IN THE PLANE OF THE MAGNETIC SURFACES OF SAID CARDS, STORING AT LEAST A PAIR OF RECORD CARDS SO THAT THE RECORDED INFORMATION ON ONE SIDE OF THE RECORD CARD IS TRANSFERRED TO THE RECORDING CHANNEL ON ANOTHER RECORD CARD STORED IN INTIMATEE CONTACT THEREWITH WHEREBY THE RECORDING CHANNELS FOR SAID RECORD CARDS COMPRISE THE RECORDED INFORMATION TRANSFERRED FROM THE CORRESPONDING TRACK AS WELL AS
Claim 2
Independent Claim
175 words
A METHOD OF RECORDING AND RELIABLY REPRODUCING FROM STORAGE INFORMATION MAGNETICALLY STORED ON RECORD CARDS HAVING A MAGNETIC SURFACE ON BOTH SIDES OF THE CARDS AND WHICH CARDS ARE STORED IN INTIMATE CONTACT WITH ONE ANOTHER WHEREBY THE MAGNETIC INFORMATION ON ONE RECORD CARD IS TRANSFERRED THROUGH CONTACT TO THE ADJACENT MAGNETIC SURFACE OF A CARD STORED IN INTIMATE CONTACT THEREWITH, SAID METHOD INCLUDING MAGNETICALLY RECORDING INFORMATION IN A PLURALITY OF TRACKS IN AT LEAST A SINGLE CHANNEL ON AT LEAST A PAIR OF RECORD CARDS WITH THE INFORMATION BEING RECORDED AT A PRESELECTED ANGLE A INCLINED WITH RESPECT TO THE NORMAL TO THE LINE THROUGH THE RECORDING CHANNEL AXIS IN THE PLANE OF THE MAGNETIC SURFACES OF SAID CARDS, STORING AT LEAST A PAIR OF RECORD CARDS SO THAT THE RECORDED INFORMATION ON ONE SIDE OF THE RECORD CARD IS TRANSFERRED TO THE RECORDING CHANNEL ON ANOTHER RECORD CARD STORED IN INTIMATEE CONTACT THEREWITH WHEREBY THE RECORDING CHANNELS FOR SAID RECORD CARDS COMPRISE THE RECORDED INFORMATION TRANSFERRED FROM THE CORRESPONDING TRACK AS WELL AS
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |