Patent DE1162913B successfully refreshed from Google Patents.
US3255307A
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Magnetic recorder-reproducer having grooved tape
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1962-09-10
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Granted: 1966-06-07
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Schuller Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:54
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; G; G11; G11B; G11B15/00; G11B15/60; G11B15/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A DEVICE FOR THE MAGNETIC RECORDING OF TELEVISION PICTURE SIGNALS AND TELEVISION SOUND SIGNALS, COMPRISING AT LEAST ONE ROTATING MAGNETIC HEAD FOR RECORDING PICTURE SIGNALS, THE AXIS OF ROTATION OF SAID HEAD BEING SUCH THAT THE TRACKS RECORDED ON THE TAPE-TYPE RECORDING CARRIER FROM AN ANGLE WITH RESPECT TO THE ADVANCING DIRECTION OF THE RECORDING CARRIER, AT LEAST ONE STATIONARY MAGNETIC HEAD FOR SOUND SIGNALS WHICH HEAD RECORDS A TRACK ON THE RECORDING CARRIER IN THE TRANSPORT DIRECTION, AND A MAGNETIC TAPE HAVING GROOVES ARRANGED TO BE INCLINED TO THE TAPE IN SUCH A MANNER AND DIMENSIONED SUCH THAT THEY CORRESPOND TO THE TRACKS RECORDED BY THE ROTATING HEAD AND GUIDE THE POLE SHOES OF THE ROTATING HEAD.
Claim 2
Independent Claim
118 words
A DEVICE FOR THE MAGNETIC RECORDING OF TELEVISION PICTURE SIGNALS AND TELEVISION SOUND SIGNALS, COMPRISING AT LEAST ONE ROTATING MAGNETIC HEAD FOR RECORDING PICTURE SIGNALS, THE AXIS OF ROTATION OF SAID HEAD BEING SUCH THAT THE TRACKS RECORDED ON THE TAPE-TYPE RECORDING CARRIER FROM AN ANGLE WITH RESPECT TO THE ADVANCING DIRECTION OF THE RECORDING CARRIER, AT LEAST ONE STATIONARY MAGNETIC HEAD FOR SOUND SIGNALS WHICH HEAD RECORDS A TRACK ON THE RECORDING CARRIER IN THE TRANSPORT DIRECTION, AND A MAGNETIC TAPE HAVING GROOVES ARRANGED TO BE INCLINED TO THE TAPE IN SUCH A MANNER AND DIMENSIONED SUCH THAT THEY CORRESPOND TO THE TRACKS RECORDED BY THE ROTATING HEAD AND GUIDE THE POLE SHOES OF THE ROTATING HEAD.
References Cited (Backward Citations)
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |