US3218077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for recording and reproducing from a magnetic sheet
Assignee: V M Corp
•
Filing: 1963-01-25
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Granted: 1965-11-16
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Expires: 1983-01-25
Abstract
No abstract record available.
Inventors
- 👤 James L D Morrison
- 👤 Michael H Estkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:08
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/34; G11B25/00; G11B25/04; G11B5/00; G11B5/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
IN A MAGNETIC RECORDING OR REPRODUCING DEVICE OF THE TYPE HAVING A HEAD MEMBER ADAPTED TO BE MOVED TRANSVERSELY ACROSS A MOVING SHEET, THE IMPROVEMENT COMPRISING, IN COMBINATION, A MOVABLE SHEET-MOUNTING MEMBER HAVING A PLURALITY OF SHEET-POSITIONING MEMBERS FIXED THERETO IN PREDETERMINED SPACED RELATION AS TO PROTECT THROUGH CORRESPONDING APERTURES IN A SHEET WHICH IS WRAPPED THEREON, A SHEET OF MAGNETIC MATERIAL OF A LENGTH NORMALLY EXCEEDING THE PERIPHERAL LENGTH OF SAID MOUNTING MEMBER AND HAVING A PLURALITY OF APERTURES ADJACENT THE ENDS OF THE SHEET AND SPACED A PREDETERMINED DISTANCE FROM SAID ENDS, SAID SHEET BEING REMOVABLY WRAPPED ON
References Cited (Backward Citations)
US3089705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |